Oscar helps Mark prepare for a date; June and Kase make a discovery.

When a student is discovered murdered at Lindsey’s school, the investigation takes a sharp turn when the CSIs uncover an unlikely connection between the boy’s death and atrocities of the…

The NCIS team must rely on Twitter for a case involving a missing Navy Lieutenant. Meanwhile, McGee misplaces his badge but withholds the information from Gibbs and the authorities.