AllMovie

The British Family Doctor was based on The Deeds of Dr. Deadcert, a novel by Joan Fleming. Young American medico Jethro (Rick Jason) pays a visit to a seaside resort in Devonshire. Ostensibly on vacation, Jethro is actually investigating the mysterious death of his ex-wife. He suspects that his wife's second husband, highly respected Doctor Dysert (Marius Goring), was responsible, but he can't prove it. Despite opposition from the local authorities, Jethro continues his probing, and before long he discovers that the saintly Dysert had been married to two other women, both of whom also met with an untimely demise--leaving Dysert with a tidy sum in the bank. Thus, Family Doctor isn't so much a Whodunit as a "When-Will-He-Get-His?" The film was released in the US by 20th Century-Fox as Rx Murder.