Third Party Risk is a 1953 crime novel by the British writer Nicolas Bentley.Reilly p.106 While holidaying near Marseille author Philip Geiger is rescued from drowning by a fellow guest at the hotel who soon embroils him in a series of events that lead to murder.
Film adaptation In 1954 it was made into film of the same title directed by Daniel Birt and starring Lloyd Bridges, Simone Silva and Finlay Currie.Goble p.36
References
Bibliography Goble, Alan. The Complete Index to Literary Sources in Film. Walter de Gruyter, 1999. Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015.