I'll definitely be continuing with this series

The Blood-Dimmed Tide - Rennie Airth

Another really good crime mystery featuring John Madden. This installment takes place in 1932, after Madden has retired from Scotland Yard. A young girl goes missing in a neighboring town, and Madden discovers her body when he volunteers as a member of a search party. He's drawn into the investigation, which takes a sinister international turn against the backdrop of the Nazi rise to power in Germany.

Overall another solid book. It's a quick read and very entertaining.