Fallout, Pt. 1

S1 E22: 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