“The idea that this apparent robbery” spits the detective, “was committed unseen by the most notorious gang in London and that a flying trapeze accident nearly a fifth of a mile away is somehow connected is a fantasy: the fantasy of a child involved in something well beyond his powers to comprehend!”
Lestrade glowers at him.
“You are wasting my valuable time. If you do not leave this second, boy, I will lay the hands of the Force on you and have you thrown into The Boating Lake.”
Sherlock’s face is burning. He has made a terrible mistake. He has gotten ahead of himself, grown too excited, believed he had the facts when he didn’t, depended on another to reveal things about which he was not absolutely certain. There is no substitute for cold, dispassionate reasoning, and in the excitement that had followed his last interview with The Swallow, he had forgotten that.
“Twenty pounds!” mutters Lestrade, stalking away.
Sherlock’s head and leaves droops as a Bobbie escorts him down the nave, depositing him near the front entrance with explicit instructions to leave the premises, along with a promise of what will be done to him if he does not. The sun is setting, darkness is descending. The fireworks will begin soon.
The moment the policeman leaves him, the boy darts back from the entrance, disappears into the crowd, and reenters the Palace. He is not giving up. He will get the money. He must.
The Swallow and his two colleagues don’t know that Sherlock has just been thrown out by the police. They are still wary of him and what he might be able to do to them: The Swallow because of what the young detective has demonstrated he knows and the others, because they are all too aware that they may still be looked upon as suspects by the police. If they have indeed escaped the clutches of the law, they want it to be permanent. Sherlock can still make those three do his bidding. That is a card he can continue to play But what can he do with it? He may only have a few hours left: the apparatus must be taken down soon and the Mercures may be allowed to leave London in the very near future. All evidence, already gathered and yet to be found, may soon be gone.
He makes himself invisible as he moves through the crowd back to the central transept. From his spot behind a big white statue of Prince Albert near the amphitheater, he can see that the police are still hovering near the vault room.
His mind is searching desperately, going back over what he knows, examining where he made mistakes, what he has missed.
What has he observed today that he hasn’t thought through yet? Often commonplace things, little details assumed not to be important at first, are the most valuable of all. Any scientist will tell you that. Have there been any recurring facts, observations he’s made more than once?
Something occurs to him.
Several times today, he’s noticed the strange fact that the vault-room walls do not reach the ceiling; and when he was inside that room with the Lestrades, he had observed it again and looked up to see if he could spot the tops of the trapeze towers. But it seems like a frivolous detail, not related in any way to the crime … or is it?
Sigerson Bell is fond of telling him that one can trace every human thought to a clear motivation. People don’t just think things. One’s mind always has a reason for going (or even wandering) in the direction it does, even if it doesn’t seem that way on the surface. For some reason, Sherlock’s mind had twice considered those unusual walls.
“Our instincts,” the old man likes to say, “are often ahead of our brains. We know something, but don’t realize it. I try to tap into that instinct when I diagnose a disease. Sometimes, something in the back of your brain, or shall we say, your gut, tells you what the problem is.”
Why does Sherlock keep noticing the short walls of the vault room?
He slouches against the pedestal beneath the statue and sighs. As he does, he looks up at the perch from which he nearly fell in the small hours of the morning, remembering the terror of it all. For an instant, he can’t stop himself from reliving it.
He shoots out over the transept on the flying trapeze, feeling as though his life is about to end. He recalls looking down … and noticing a room with walls that didn’t quite reach the ceiling.
That was the first time it had occurred to him. He concentrates on what he saw. What had it meant to him? Why, afterwards, did he keep noticing it? Suddenly … he realizes what it is.
He could almost see inside the vault room from the apex of his swing on the flying trapeze! No other vantage point in the Crystal Palace affords such a view. None! He thinks of Monsieur Mercure and how incredibly high he soared that day.
Sherlock stands up and darts through the crowd to the base of the tower. The Swallow is loitering there.
“Master ’olmes,” he says, “can we tear this down yet?”
“No,” says Sherlock excitedly, “not yet. Do you want to absolve yourself entirely of this crime?”
The expression on the other boy’s face grows serious.
“I do.”
“Then climb up that tower, get on the trapeze, and swing as high as you possibly can, as high as Mercure usually went.”
The Swallow looks at the boy as if he were a lunatic. No one is expecting a performance, and the boy is dressed in his street clothes.
“’e always went the ’ighest,” he finally says, as if delaying.
“I know. Do this for both of us, Johnny. And when you do, look toward the area where the police are gathered, toward the room they are standing in front of, where the vault is, and tell me what you see.”
The Swallow climbs the tower, ascending as quickly and silently as a mouse. He reaches the perch, grabs the swing, and sends himself flying out over the central transept.
Down below, several people notice. There are oohs and ahs and soon hundreds, then thousands, are looking up, pointing to the distant glass ceiling. The Swallow swings very high, then pumps his legs and goes higher and higher, approaching maximum speed, thrilling the crowd. They begin to applaud. Finally, he alights back on his perch, landing to a great roar.
At the bottom of the tower, The Swallow is met by Crystal Palace officials and two Bobbies, angrily asking him why he was up on the apparatus. Clever as always, he insists that it is a flying trapeze tradition to do this before the “tear-down.” While they are discussing whether or not to believe him, he slips away and finds Sherlock.
“Well?” the young detective asks, a look of anticipation on his face.
“I could see right into the room, Master ’olmes. I could see the far wall with the curtain drawn across it and I could see the guard sitting there in ’is chair, as plain as day.”
Sherlock smiles.
“It has been a pleasure to know you, Master Wilde,” he says. “You are a gentleman and a star. You may go and so may your two colleagues. Break a leg.”
The Swallow grins back. “Much obliged, sir. The pleasure ’as been mutual.”
Sherlock Holmes walks straight out into an open area where the police can see him clearly. Lestrade notices, his face turns red and he yells for a Bobbie to pursue the boy. Sherlock drifts into the crowd again, the policeman after him. Young Lestrade watches with a look of wonder and slight admiration.
The tall, thin boy steps down the big front staircase of the Palace under his own steam with that smile still on his face. The grounds glow, lit by their many gaslights, and up above, fireworks explode in loud concussions and marvelous colors in the black sky.
Only Sherlock Holmes knows what Mercure said just before he fell. And now he knows what it meant.