The 5th Gideon Fell mystery, re-released by Open Road Media - originally written in 1935.
From the Blurb:
John Dickson Carr, a master of the Golden Age British-style mystery novel, presents Dr. Gideon Fell’s most chilling case, in which a clock-obsessed killer terrorizes London
A clockmaker is puzzled by the theft of the hands of a monumental new timepiece he is preparing for a member of the nobility. That night, one of the stolen hands is found buried between a policeman’s shoulder blades, stopping his clock for all time.