JACK AND HIS TEAM ARE BLINDSIDED WHEN A SUSPECT SUDDENLY OPENS FIRE IN THE FBI OFFICES, ON A REBROADCAST OF THE FOURTH SEASON FINALE OF "WITHOUT A TRACE," SUNDAY, SEPT. 17

Academy Award Nominee and Tony Award Nominee Mary Elizabeth Mastrantonio ("The Color of Money," "Man of La Mancha") Returns

Golden Globe Nominee Jason Priestley ("Beverly Hills, 90210") Guest Stars

"Crossroads" -- While investigating the disappearance of a young female former assistant district attorney, Jack and the rest of the team are blindsided when the woman's ex-boyfriend suddenly opens fire on the FBI offices, on a rebroadcast of the fourth season finale of WITHOUT A TRACE, Sunday, Sept. 17 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Jeannot Szwarc directed the episode written by David Amann, one of the series' co-executive producers. (Originally broadcast 5/18/06)

Academy Award nominee and Tony Award nominee Mary Elizabeth Mastrantonio ("The Color of Money," "Man of La Mancha") returns as Jack's girlfriend and colleague, FBI agent Anne Cassidy. Jason Priestley ("Beverly Hills, 90210") guest stars as the suspect.

When Alan Davis (Priestley), the former boyfriend of the missing Jennifer Nichols, realizes that he's a suspect in her disappearance, he suddenly pummels Jack, grabs Jack's gun and bolts out of the FBI building while firing a hail of bullets. Before and after the shooting, Jack and the team delve into Alan's background and possible motives while also looking into the relevance of Jennifer's mysterious visit to a prisoner the night before she vanished.

Jack Malone: Anthony LaPaglia
Samantha Spade: Poppy Montgomery
Vivian Johnson: Marianne Jean-Baptiste
Danny Taylor: Enrique Murciano
Martin Fitzgerald: Eric Close
Elena Delgado: Roselyn Sanchez
James "Mac" MacElroy: Joshua Gomez
Anne Cassidy: Mary Elizabeth Mastrantonio
Alan Davis: Jason Priestley
Jennifer Nichols: Natalie Zea
Grant Stoker: Brian Howe
Lucy Stoker: Lauren Bowles
Renee Santos: Ingrid Sanai Buron
State Trooper: Jeffrey Nicholas
Agent Bartlett: Joseph Will
Cabby: Elliot Santiago
Eric Jensen: Curtis Mark Williams

RATING: TV14-LV