Hamlet, Revenge!
by Michael Innes (Gollancz, 1937); audiobook read by Matt Addis (2015)
Poetic and engaging. A clever, complicated mystery, rendered slightly unsatisfying by the lengthy preamble and the shifting narrative perspective. Innes has everything planned out but cannot contrive for Appleby to solve the case alone (or even with the help of Giles Gott).