Writer:	Barbara Ellis Nance
Director:	David Jackson
Star:	Peter Dinklage (Arthur Ramsey),  Charles S. Dutton (J.T. Baylock),  Carla Gugino (Molly Anne Caffrey),  Brian Van Holt (Cavennaugh),  Brent Spiner (Nigel Fenway),  Robert Patrick Benedict (Lucas Pegg)
Guest Star:	Michole White (Cindy),  Shane Conrad (Thomas Sanford),  Christopher May (Patrick Drennan),  Julie Dretzin (Libby Drennan),  Steve Vinovich (Ken Polchek),  Maurice Godin (Ed Whitaker),  Elizabeth Berkley (Christine Polchek),  David Hornsby (Robert),  Dotan Baer (Navy Seal #2),  Michael Broderick (Agent),  Li Jing (Susan Medrano),  Matt Sigloch (Agent Rice),  Michael Bentt (Detective),  Jeff Cockey (Agent Hayes),  Denise Dowse (Dr. Margaret Johnson),  Joe Sabatino (Team Leader),  David Goryl (Assistant Manager)

This was the last episode of Threshold to air on CBS. The series was canceled by the network due to low ratings. The remaining four episodes were repurposed and aired on the Sci-Fi Channel. (edit)

Molly: One thing's for sure, she knows she's pregnant.
Fenway: Question is, with what? (edit) Baylock: (to Molly and Cavennaugh) We can't "Bigfoot" the Mexican authorities like we do here. (edit) Baylock: Rationalization is an addict's best friend.
(edit) Molly: She was reaching out to you.
Cavennaugh: She was reaching out, all right.
Molly: May I ask, what you two were doing?
Cavennaugh: We were dancing. (edit) Ramsey: A walking billboard for bachelorhood. (edit)

In the scene where Caffrey and Cavennaugh go to arrest the infectee who killed her husband, she mistakenly calls Cavennaugh "Calloway" when asking him to enter the bedroom. (edit) When Fenway injects the pregnant woman, he says he is using naloxone to sedate her. Naloxone is not a sedative. It is a drug used to reverse the effects of other sedatives such as morphine. (edit) Fenway (Brent Spiner) uses the alias Dr. Martin Wrigley. Both "Fenway" and "Wrigley" are professional baseball stadiums. Fenway Park is home to the Boston Red Sox and Wrigley Field is home to the Chicago Cubs. Moreover, Brent Spiner is a Cubs fan and Fenway has indicated a love of baseball in previous episodes. (edit) It is revealed in this episode that Ramsey has an online gambling problem. (edit) It is revealed in this episode that Cavennaugh's first name is Sean. (edit)

The song heard in the background in the package delivery store is Peter Gabriel's 1982 hit "Shock the Monkey," which is song about jealousy. (edit)