I've managed to knock out another six books on my list. I enjoyed them all and there's not a one of these I would not reread. Reviews, such as they are, of the last two can be found at The Book Book.
The High Window by Raymond Chandler
Curtain and The Mysterious Mr. Quinn by Agatha Christie
The Red Thumb Mark By R. Austin Freeman
The Red House Mystery by A.A. Milne
The Moving Toyshop by Edmund Crispin