Lindsay Tanner arrives at Purgatory, a private nightclub north of Darkisle, to study the strange clientele who frequent it. Though she believes the people there are simply indulging in sexual fetishism, she is in for a shock when she realizes that they really are what they pretend to be: vampires. She also does what no researcher should do and becomes involved with two men, Caine and Gabriel, vampires who share an unusual bond. Both have secrets, and each seems out to destroy the other. Lindsay must find a way to bring them together and resolve her attraction to-not to mention satisfy her lust-for both of them.