[Examining Brian Lukis's apartment]
Fourth floor. That's why they think they're safe. Put the chain on the door, bolt it shut. They think they're impregnable. [spots the skylight] They never consider for a moment there's another way in.
I don't understand.
[Sherlock grabs a table, balances a chair on it and climbs up on it]
We're looking for a killer who can climb.
Wh-what are you doing?
Clings to the walls like an insect. That's how he got in.
What?
Climbed up the side of the walls, ran along the roof, dropped in through this skylight.
You're not serious. Like Spider-Man?
He scaled six floors of a Docklands apartment building to kill Van Coon.
Hold on.
That's how he got into the bank: he ran along the roof and onto the terrace.
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