Returned: March 24 (airs Mondays at 10 pm/ET, on CBS) Number of new episodes: 7

Where we left off: Just as Horatio Caine's son Kyle is set for trial, his manipulative mother Julia (Elizabeth Berkeley) enters the picture. Conveniently the only witness to Kyle's crime never shows up to testify, leaving us to wonder what really happened in the Everglades.... What's next: H gets closer to the truth behind Kyle's mistrial (did Julia kidnap the only witness and push her car into the Everglades?), so Julia has him extradited to Brazil on a murder charge from last season. While Horatio ends up with guns pointed at him, Calleigh Duquesne is cyberstalked. Later, things get out of hand when she's abducted by two guys who want her to cover up a murder. "Calleigh will be waking up in a basement somewhere," says exec producer Ann Donahue says. The intrigue doesn't end there. The season also includes a To Catch a Predator-inspired episode. Watch full episodes | Photos | More Returning Favorites coverage