Vacationing in India with her married lover Errol Colton, Stephanie Locke accidentally discovers his connection with the drug trade and returns home uncertain about what to do--and, on the evidence, still undecided at the time of her death of a barbiturate overdose shortly thereafter. As her crippled war-hero father James, determined to get revenge on Colton, begins the dogged rounds of his own investigation, Naresh Prasad, recruited as a heroin carrier by Errol's associates, arrives in England and his own personal nightmare. Both James and Naresh, in their different ways, soon develop ambiguous relationships with the police: to say more would spoil the fun. Not much real mystery or detection here, but plenty of surprises from old pro Graham (Ross Poldark, etc., etc.).