Episode 718A, "The Last Drive In" Tomorrow 2|1c
SEASON 7, EPISODE 718A - When ballistics tie a recent murder case of Rush's to a serial killer who was seemingly inactive for 27 years, Diane Yates (recurring guest star Susanna Thompson -- Once and Again, NCIS, Kings), a tough, no-nonsense FBI agent who was responsible for the end of Stillman's marriage, shows up to enlist the team's aid in finding the killer who has eluded her for 30 years.
SEASON 7, EPISODE 719B - In the conclusion of this two-part episode, after determining the serial killer's identity -- and some of his likely future targets -- the team and the FBI work together to apprehend him while trying to locate and protect the people he's preparing to kill. Recurring guest star Susanna Thompson appears as FBI agent Diane Yates.
SEASON 7, EPISODE 720 - Rush and FBI agent Ryan Cavanaugh (recurring guest star Johnny Messner -- Burn Notice, Wrong Turn at Tahoe) discover their attraction for one another while investigating the 1969 murder of a U.S. soldier at Woodstock in between tours in Vietnam. Plus, Vera helps his married ex-girlfriend, Megan (guest star Sarah Aldrich -- Monk), after sentimental jewelry is stolen from her home.
SEASON 7, EPISODE 721A - In part one of this two-part episode, the team investigates the 1989 case of a prom queen who was killed after her prom by a potentially deliberate hit-and-run driver. Meanwhile, Rush tries to ignore her father's appeals to give her troublemaker sister, Christina (recurring guest star Nicki Aycox -- Dark Blue), another chance after she suddenly resurfaces. Recurring guest star Raymond J. Barry appears as Paul Cooper. Guest star Kerry O'malley (Brotherhood) appears as Suzie Hill, the prom queen's closest friend in present day.