Two high profile couples are forced to examine the cost of success when they're invited to an exclusive self-help retreat where their ancestors sold their souls generations prior.
Londoner Ronnie embarks on a journey to India when his mother, Suleka, goes missing and mysteriously ends up in a Kolkata hospital. Before Ronnie can unravel the mystery of what brought his mother back to her homeland, Suleka dies in an apparent cult killing. Further deaths point to a series of past murders that stopped 28 years ago when Suleka left India with her infant son. Until now. As the darkness within Ronnie grows and the murders reach their peak, all roads lead to the feared witch of Kolkata's insane asylum.
Hit man Philip Raven, who's kind to children and cats, kills a blackmailer and is paid off by traitor Willard Gates in hot money. Meanwhile, pert entertainer Ellen Graham, girlfriend of police Lieut. Crane (who's after Raven) is enlisted by a Senate committee to help investigate Gates. Raven, seeking Gates for revenge, meets Ellen on the train; their relationship gradually evolves from that of killer and potential victim to an uneasy alliance against a common enemy.