Maigret and the Yellow Dog by Georges Simenon [Book]
A wine dealer is shot and wounded via gunfire through a mail slot, traces of poison are found at the Admiral Hotel, a mysterious waitress keeps reintroducing herself as the plot thickens, the footsteps of a giant are discovered, a doctor is having a nervous breakdown behind bars, the mayor is acting rather suspicious, a customs official is shot in the leg and a large, wandering yellow dog is present at the crime scenes. What does it all mean???
Fear not, international mystery fan. The laconic, pipe smoking, French speaking inspector Maigret is on the case!