A man trying to hide an affair and special forces operative stalking his ex-wife escape Holli's attempt to contain for inoculation the passengers of a flight on which a man has died of bacterial meningitis.

Hollie and Detective Mack track down a serial killer who murders models.

When Mack attends a reunion of prep school friends at a hotel where Holli is coincidentally on a romantic getaway, some of his friends are murdered for which infidelity or business betrayal could be the motive.

A prominent bookie is involved in a couple of accidental deaths while Herzog has an affair with a cop's wife who has faked the circumstance of her husband's death.