SEASON 4, EPISODE 418 - In 1999, a suburban mom, Marlene Bradford (Paula Malcomson), lost her house after her husband died and, possessing very few street smarts, she was forced to live in her station wagon with her daughters, ages 9 and 14. Now, an environmental group finds Marlene's car--with her decomposed body in it--at the bottom of a lake. She had been shot. After her disappearance, her daughters were placed with separate families and lost touch. Rush and the team must glean enough facts from the girls' memories to determine who murdered their mother. Meanwhile, despite Stillman's orders to the contrary, Jeffries tries to track down the trucker who killed Jeffries' wife in a hit-and-run.