Guy is recruited to join a top-secret spy organization for the supernatural world. He must choose between his old life in the ordinary world and a new life as an undercover spy. Helen deals with trouble at the New York Mother House.

Guy joins the Talamasca, leaving his old life as a lawyer behind. Helen trains him on the ins and outs of undercover work. Guy is sent to London on his first mission - to follow a mysterious hit man.

Guy questions his trust in Helen and the Talamasca in the wake of a dangerous mission. Helen tells Guy the story of the Seven Five Two and its place in the history of the supernatural world. New information comes to light.

Guy breaks from his undercover identity and comes face to face with Jasper. Jasper puts Guy on a mission to find the Seven Five Two in the hotel of a local vampire coven. Helen continues to investigate her past.

Jasper and Guy come head to head at the London Mother House. Helen's motives are questioned. Guy and Doris become closer. Loren and Ridge are on the verge of discovering an important revelation.

In the wake of Jasper's actions against the Maida Vale, Ridge takes suspects into police custody. Helen discovers something important about her past. The truth of the 752 comes to light.