"Sin for Salvation" is an ancient cult with murderous rituals. Its members aspire to commit the ultimate sin, known as Prohibition A. The cult preaches a hyper-sexual creed that has seduced Wall Street's highest fliers. Recruits are enlisted in the world's most exclusive nightclub, featuring a sado-masochistic fantasy journey through Dante's nine circles of hell. But when its super rich clientele leave the club, it's neither lust nor lucre they have on their minds. It's murder. When FBI Agent Sarah Harris starts investigating, she finds herself traveling into her own past, where her darkest secrets lie in wait.