A double murder case starts with a corpse in a cab. When the second body is found, there's one coincidence linking the two - they have the same initials... C.H.

“The housing shortage may be bad but there’s one place I know of that always has room for another tenant. It’s a big grey structure near the river and the windows are crossed with iron bars and the landlord never asks you for a penny in rent. If you are an extra-special customer they even give you a private suite in a secluded part of the building that leads directly to a room with a heavy chair. That room is reserved for the guys who find out that they can’t get away with murder…”