Wanting to get Liz off his mind, Max dives into work at the annual UFO Convention being held at the museum. Max's life is further complicated when he discovers the two civilians who witnessed his healing of Liz at The Crashdown, are back in town and have plans on exposing him as an alien. Valenti soon discovers EVERETT HUBBLE, the man who ruined his own father's career, has come to town for the convention. Thanks to the two civilians ramblings, Hubble becomes suspicious of Max and kidnaps him.
Holding him at gunpoint, Hubble tells Max he believes he is the same shape shifter who killed his wife many years ago. Max insists his innocence, as Michael shows up to create a diversion. Valenti then comes to the rescue, shooting Hubble dead. Valenti tells Max and Michael to leave, and Max tells Michael he is suspicious the fourth alien may really be a killer. Meanwhile, Isabel tells Alex to stop following her around and Michael meets Maria's mom for the first time.
- Shiri Appleby as Liz Parker
- Jason Behr as Max Evans
- Colin Hanks as Alex Whitman
- Katherine Heigl as Isabel Evans
- Majandra Delfino as Maria DeLuca
- Brendan Fehr as Michael Guerin
- William Sadler as Jim Valenti
- Diane Farr as Amy DeLuca
- Last appearance of James Valenti Sr.
- Jim finally uncovers the truth about what happened to his father
- Jim shoots and kills Hubble
- Max realises Nasedo may be a murderer