Marsha Dietlein Bennett

Ben's (recurring guest star DAVID CALL) mother (guest star MARSHA DIETLEIN BENNETT - Little Children) comes to town, forcing issues to the surface between Ben and Serena. Meanwhile, Russell Thorpe (recurring guest star MICHAEL BOATMAN) is determined to destroy Chuck's family legacy, but he risks alienating his daughter, Raina (recurring guest star TIKA SUMPTER), in the process. Plus, recurring guest star BILLY BALDWIN appears as William van der Woodsen, Lily's ex-husband and Serena and Eric's father. Also available on iTunes and VUDU

In part two of a two-part season finale, Jack's squad must determine the best course of action when Samantha is shot and possibly critically injured in a hostage situation. After the ransom drop for a woman who has disappeared goes dreadfully wrong, Samantha becomes trapped in a bookstore by the kidnapper, Barry Mashburn (recurring guest star Tom Irwin), who has discovered that she is an FBI agent. Jack successfully negotiates Samantha's release by substituting himself then continues to bargain on behalf of other hostages. Meanwhile, the team continues to search for Sydney Harrison (recurring guest star Marsha Dietlein Bennet), the missing woman. Part 2 of 2

In part one of a two-part season finale, Jack and his team search for an office worker, Sydney Harrison (recurring guest star Marsha Dietlein Bennet), who disappeared from her building. Within hours of Sydney going missing, her employers receive a ransom note via e-mail demanding $50,000. The kidnapper is identified as Barry Mashburn (recurring guest star Tom Irwin), the husband of Sydney's former assistant, who died in the company's World Trade Center office during the terrorist attack. After a plan for the ransom exchange is devised, with Samantha undercover at the location, everything seems to be going well until Mashburn panics and turns the kidnapping into a volatile hostage crisis. Part 1 of 2

Goren and Eames investigate the murder by sniper attack of an abortion doctor - a subject close to Eames' heart. Also available on iTunes