<h2><SPAN name="chap19"></SPAN>CHAPTER XIX.<br/> THE FOURTH CASE</h2>
<p>The boy and girl sat long and late in the open window at the back of the house.
The room would have been in darkness but for a flood of moonlight pouring over
them. The only light in the house was in the room above, and they only saw its
glimmer on the garden when a casual cloud hid the moon; but once Pocket had
crept out into the garden to steal a look at the lighted window itself; and
what he saw was the shadow of a huge bent head smoking a huge bent pipe, and
dense clouds of shadow floating up the wall and over the ceiling.</p>
<p>It seemed hours since they had heard footstep or other sound upstairs or
anywhere. There had been a brisk interval—and then an end—of more
or less distant hansom-bells and motor-horns. There was no longer even a
certain minute intermittent trembling of trifles on the walnut-tables, to which
Pocket had become subconsciously accustomed in that house, so that he noticed
its absence more than the thing itself. It was as though the whole town was at
rest, and the tunnels under the town, and every single soul above or below
ground, but those two white faces in the moonlight, and perhaps one other
overhead.</p>
<p>Pocket wondered; it was so long since a single sound had come down to their
ears. He wanted to steal out and look up again. Phillida was against it;
perhaps she was wondering too. Pocket, as usual, saw what he did see so very
vividly, in his mind’s eye, that he shivered and was asked if he felt
cold. The whispered debate that followed was the longest conversation they had
that night. The window was not shut as a result of it, but Pocket fetched his
overcoat on tiptoe, and it just went over both their shoulders, when the chairs
were drawn as near together as they would go.</p>
<p>The ragged little garden was brimming over with moonlight from wall to wall.
The unkempt grass looked pale and ghostly, like the skin of some monstrous
wolf. The moon rolled high in the sky and clouds flew above and below the moon,
varying in pace as well. Yet it was a still night, and Pocket did not think
that he had broken the stillness, until the door burst open behind them, and
Baumgartner stood there, holding his lamp aloft. The wick was turned too high,
the flame ran up the chimney in the draught, and for an instant a demoniac face
flared up behind it. Then the chimney cracked, and fell in a tinkling shower,
and the doctor was seen whirling a naked tongue of fire about his head. The boy
drew back as the lamp flew through the open window, within an inch of his
nose, and crashed upon the path outside.</p>
<p>The trio stood without a word in the moonbeams; but the doctor was breathing
hard through his teeth, like a man wrestling with himself; and at last he
laughed sardonically as though he had won.</p>
<p>“A lamp like that’s a dangerous thing,” said he, with a kind
of forced solemnity and a shake of the head; “you never know what may
happen when a lamp does that! I’m glad the window was open; it
didn’t go very near my young fellow, I hope?”</p>
<p>And he took Pocket playfully by the ear, but pinched it so hard that the boy
could have screamed with pain.</p>
<p>“It would have served you right,” continued the doctor, before
Pocket could find his tongue, “for sitting up so late, and keeping a
young lady from her bed to bear you company. Come, Phillida! I shall have
another word with you, young fellow.”</p>
<p>The two words to the girl were in a different key from all the rest. They were
tolerant, conciliatory, tenderly persuasive. The rest was suavely sinister; it
made her hesitate; but Pocket had the presence of mind to bid her a cheery
good-night, and she went, closely followed by Baumgartner.</p>
<p>Posted once more at the open door, the boy heard Baumgartner on the next
flight, soothing and affectionate still, allaying her fears; and his own
surged into his throat. He looked wildly about him, and an idea came. He opened
the front door wide, and then stole back through the conservatory into the
moonlight. He heard Baumgartner coming down before he gained the garden. He
tore to the end of it, and cowered in the shadow of the far wall.</p>
<p>The doctor came running into the moonlit room, but not for a minute; it looked
as though he had run out first into the road. In the room he lit the gas, and
Pocket saw him have a look in all the corners, but hardly the look of a seeker
who expects to find. Some long moments he stood out horribly at the open
window, gazing straight at the spot where the fugitive crouched a few inches
out of the moonlight and hugged the revolver in his pocket. He seemed to see
nothing to bring him out that way, for he closed that window and put out the
gas. The trembling watcher heard the front door shut soon after, and saw
another light in Baumgartner’s room the minute after that, and the blind
drawn down. But on the blind there lagged a cloud-capped shadow till the
doctor’s pipe was well in blast.</p>
<p>There were no more shadows after that. The moon moved round to the right, and
set behind the next house. The sky grew pale, and the lighted blind paler
still, until Baumgartner drew it up before putting out his light. Pocket was
now too stiff to stir; but it was not necessary; the doctor had scarcely looked
out. There was a twitter of sparrows all down the road, garden answering to
garden. The sun came up behind Pocket’s wall, behind the taller houses
further back. And Baumgartner reappeared at his window for one instant in his
cap.</p>
<p>The front door shut again.</p>
<p>Down the garden ran Pocket without the least precaution now. There was a gravel
passage between the tradesmen’s entrance, on the detached side of the
house, and the garden wall. This passage was closed by a gate, and the gate was
locked, but Pocket threw himself over it almost in his stride and darted over
into the open road.</p>
<p>Just then it was a perfectly empty road, but for a gaunt black figure stalking
away in the distance. An overwhelming curiosity urged the boy to follow, but an
equal dread of detection kept him cowering in gateways, until Baumgartner took
the turning past the shops without a backward glance. Pocket promptly raced to
that corner, and got another glimpse of his leader before he vanished round the
next. So the spasmodic chase continued over a zigzag course; but at every turn
the distance between them was a little less. Neither looked round, and once the
boy’s feet were actually on the man’s shadow; for half the streets
were raked with level sunlight, but the other half were ladders of dusk with
rungs of light at the gaps between the houses. All were dustier, dirtier, and
emptier than is ever the case by night or day, because this was neither one nor
the other, though the sun was up to make the most of dust, dirt, and emptiness.
It was before even the cleansing hour of the scavenger and the water-cart. A
dead cat was sprawling horribly in one deserted reach of wood-paving. And a
motor-car at full speed in a thoroughfare calling itself King’s Road,
which Pocket was about to cross, had at all events the excuse of a visible mile
of asphalt to itself.</p>
<p>Pocket drew back to let it pass, without looking twice at the car itself, which
indeed was disguised out of knowledge in the promiscuous mire of many
countries; but the red eyes behind the driver’s goggles were not so slow.
Down went his feet on clutch and brake without a second’s interval; round
spun the car in a skid that tore studs from the tyres, and fetched her up
against the kerb with a shivered wheel. Pocket started forward with a cry; but
at that moment a ponderous step fell close behind him; his arm was seized, and
he was dragged in custody across the road.</p>
<p>“Your boy, I think!” cried one whom he had never seen before, and
did not now, being locked already in the motorist’s arms.</p>
<p>“When did you find him?” the father asked when he was man enough,
still patting Pocket’s shoulders as if he were a dog.</p>
<p>“Only last night when I wired.”</p>
<p>“And where?”</p>
<p>“In the house where you and I couldn’t make ourselves heard.”</p>
<p>The schoolboy flared up through all his emotion.</p>
<p>“Why, I never saw you before this minute!”</p>
<p>“Well, I’ve had my eye on you, more or less, for a day or
two.”</p>
<p>“Then why didn’t you wire before?” demanded Mr. Upton, quite
ready to mask his own emotion with a little heat. “I didn’t get it
till after nine o’clock—too late for the evening train—but I
wasn’t going to waste three hours with a forty-horser eating its head
off! So here I am, on my way to the address you gave.”</p>
<p>“It was plumb opposite Baumgartner’s. I mounted guard there the
very night you left. He came out twenty minutes ago, and your boy after
him!”</p>
<p>“But what does it all mean, Thrush? What on earth were you doing there,
my dear boy?”</p>
<p>The notes of anger and affection were struck in ludicrously quick succession;
but the first was repeated on the boy’s hang-dog admission that he had
been hiding.</p>
<p>“Hiding, Tony?”</p>
<p>Thrush himself seemed surprised at the expression. “But at all events we
found you better employed,” he said to Pocket, “and the sooner we
all take up the chase again the more chance we shall have of laying this rascal
by the heels.”</p>
<p>“Take it up, then!” snapped Mr. Upton. “Jump into the motor,
and bring the brute to me when you’ve got him! I want to speak to my
boy.”</p>
<p>He did not realise the damage done to his car, or listen to a word that passed
between Thrush and his chauffeur; he had eyes only for those of his child who
had been lost but was found, and not a thought in his head outside the story he
extracted piecemeal on the spot. Poor Pocket told it very volubly and ill; he
would not confine himself to simple facts. He stated his suspicion of
Baumgartner’s complicity in the Hyde Park affair as though he knew it for
a fact; cited the murders in Holland Walk and Park Lane as obvious pieces of
the same handiwork, and yet declared his conviction that the actual hand was
not Dr. Baumgartner’s at all.</p>
<p>“But why should you think he had an accomplice, Tony?”</p>
<p>“He was unarmed the other morning. I’m quite positive of that. And
his niece, who lives with him, has never seen a firearm of any kind in the
house.”</p>
<p>“Well, he’s villain enough to hang, if ever there was one!
It’s time we laid hold of him. Where’s Mr. Thrush? I thought
you’d taken him on in the car?”</p>
<p>This to the chauffeur, now the centre of the carrion crowd that gathers about
the body of any disabled motor. The chauffeur, a countryman like his master,
was enjoying himself vastly with a surreptitious cigarette and sardonic
mutterings on the cause of his scattered spokes; the facts being that he had
nearly fallen asleep at his wheel, which Mr. Upton had incontinently taken into
his own less experienced hands.</p>
<p>“The car won’t take anybody anywhere to-day,” explained the
chauffeur, with his cigarette behind his back. “I shall have to get a
lorry to take the car.” He held his head on one side suddenly.
“There’s a bit o’ tyre trouble for somebody!” he cried,
grimly.</p>
<p>Indeed, a sharp crack had come from the direction of the river, not unlike the
bursting of a heavy tyre; but Pocket Upton did not think it was that. He caught
his father’s arm, and whispered in his father’s ear, and they
plunged together into a side street broader than the asphalt thoroughfare, but
with scarcely a break in either phalanx of drab mediocre dwellings, and not a
creature stirring except themselves and a few who followed. The hog’s
back of a still more deserted bridge arched itself at the foot of the street,
its suspension cables showing against the sky in foreshortened curves. As they
ran a peculiarly shrill whistle cut the morning air like a streak of sound.</p>
<p>“P’lice!” screamed one of those bringing up the rear, and
they easily spurted past father and son, each already contending with his own
infirmity. Mr. Upton was dangerously scarlet in the neck, and Pocket panting as
he had not done for days. In sad labour they drew near the suspension bridge,
to a crescendo accompaniment on the police whistle. It was evidently being
blown on the Embankment to the right of the bridge, and already with
considerable effect. As the pair were about to pass an intermediate turning on
the right, a constable flew across it on a parallel course, and they altered
theirs with one accord. Pocket panted after the constable, and his father
thundered after Pocket, into a narrow street debouching upon a fenced strip of
greenery, not too dense to hide broad pavement and low parapet on its further
side, with a strip of brown river beyond that, and a skyline of warehouses on
the Surrey shore.</p>
<p>The narrow garden had not been opened for the day. There was a gate opposite
the end of the road, another gate leading out on the Embankment opposite that.
Between the two gates a grimy statue rose upon a granite pedestal, a meditative
figure clad to the heels in some nondescript garment, and gazing across the
river as he sat with a number of discarded volumes under his chair. It was a
peculiarly lifelike monument, which Pocket would have been just the boy to
appreciate at any other time; even now it struck him for an instant, before his
attention was attracted to the group of commonplace living people on the
Embankment beyond the narrow garden. They were standing together on the far
side of one of the fixed seats. There was the policeman who had blown the
whistle, and a small but motley crew who had answered to the call. Conspicuous
units were a gentleman in dressing-gown and pyjamas, a couple of chimneysweeps,
and a labouring cyclist on his way to work. They had formed a circle about some
hidden object on the ground; and long before the new-comers could run round and
join them, the schoolboy had steeled himself to look upon another murdered man.
He was in no hurry to look; apart from a natural dread of death, which he had
seen for the first time, and then unwittingly, only the other morning, it was
the murderer and not his victim of whom the boy was thinking as he arrived last
upon the scene. It was Dr. Baumgartner whom he half expected to see swimming
the river or hiding among the bushes in the enclosed garden; for he was not one
of the group on the Embankment; and how else could he have made his escape? The
point was being discussed as Pocket came into earshot; all he could see of the
fallen man was the soles of his boots upright among living legs.</p>
<p>“Is he dead?” he asked of one of the chimneysweeps, who was
detaching himself from the group with the air of a man who had seen the best of
the fun.</p>
<p>“Dead as an ’erring,” replied the sweep cheerfully.
“Sooicide in the usual stite o’ mind.”</p>
<p>“Rats!” said the other sweep over a sooty shoulder; “unless
’e shot ’isself first an’ swallered the shooter afterwards!
Some’un’s done ’im in.”</p>
<p>Pocket set his teeth, and shouldered his way into the group. His father was
already in the thick of it, talking to the stout man in spectacles, who had
risen miraculously from the ground and was busy brushing his trouser-knees.
Pocket forced himself on with much the same nutter he had taken into the
Chamber of Horrors, but with an equal determination to look just once upon Dr.
Baumgartner’s latest victim. A loud cry escaped him when he did look; for
the murdered man, and not the murderer, was Dr. Baumgartner himself.</p>
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