I hurried after him. "Holmes, you don't really think this could be an accident?"
"Of course not, Watson. The child was murdered, and either the mother or the maid was responsible. Until I know which one, I cannot accuse either, as to accuse one incorrectly would allow the true villain to escape." Holmes strode quickly down the street, raising one arm to hail a hansom cab. "I will be out late tonight, Watson. I need to make certain enquiries. If you would be so good as to tell Mrs Hudson that I will not be in for dinner, and to do a small piece of research for me, I will tell you everything when I return."
"Of course, Holmes, you know I will. What research do you need?"
A cab stopped, and Holmes helped me inside, my limp being rather worse than usual due to the poor weather. "Search my books for any mention of Geoffrey Forger. Make particular note of any known aliases."
"Baker Street," I told the waiting cab driver, then turned back to Holmes. "I'll have the results when you return tonight."
Holmes gave me one of his rare grins. "I would tell you not to wait up, but I know better than to argue against the inevitable." He stepped away from the cab, and we took off, Holmes disappearing into the fog behind me.