Famous photographer Larry Martin receives a visit from his brother Philip, on leave from military service in West Germany. Philip is trying to find the wife of a deceased friend and his search takes him to Dublin. Sometime later, Larry learns that Philip never went to Dublin, but instead has disappeared.
Episode 1
Philip briefly returns to his brother Larry from the Army, with a story about needing to head to Ireland, but instead stays in a hotel, where tragedy awaits.
Episode 2
Larry is convinced his brother's death wasn't suicide, and, with another close death, takes matters into his own hands.
Episode 3
Larry is questioned by Hyde as his prints are found on the knife. Larry and Ruth visit a nightclub and find a familiar looking couple.
Episode 4
Larry talks with the couple in the strange photo, and discovers his brother was in possession of a vast sum of cash.
Episode 5
Larry must think on his feet to deal with an armed assailant, and also has to make a decision about a parcel intended for his brother.
Episode 6
Larry is placed in real danger, as efforts to get hold of the key he'd copied are stepped up.
