‘My bedroom.’
‘Can I examine it?’
‘Yes, of course.’
Holmes followed Soames into his bedroom.
‘Hello,’ said Holmes,’ What’s this? Another small lump of black mud, exactly like the one on the desk. Clearly your visitor came into the bedroom.’
‘I don’t understand. Why did he do that?’
‘Well, when you came back so suddenly, he must have run into your bedroom to hide. Look at the bedroom window, it’s open. That must be how he escaped.’