Any private eye knows a lot about other people's secrets. L.A. private eye Mick St. John (Alex O'Loughlin) has a secret of his own. He's a vampire, dwelling in a covert netherworld complicated by friendship with an undead finance honcho (Jason Dohring), memories of the alluring ex-wife (Shannyn Sossamon) who turned him into a vampire and a relationship with a human (Sophia Myles) he feels drawn to protect - and maybe to love. But no matter how tempting, Mick knows a vampire-human romance is eternally dangerous.