The Sweepstake Murders

The Sweepstake Murders is an 1931 detective novel by the British author Alfred Walter Stewart, published under his pseudonym J.J. Connington. It is the seventh in his series of novels featuring the Golden Age Detective Chief Constable Sir Clinton Driffield. It uses a tontine murder theme, which recurs in detective and mystery stories.

Synopsis
After a night of cards a group of men agree to invest in a pool on a coming sweepstake. The group are successful but before they can claim their winnings, one of their number is murdered. The prize money is due to be shared amongst the group, but further members are then killed. Sir Clinton Driffield is involved both professionally and privately, as his close friend Wendover is one of the members of the syndicate.