NCIS: Los Angeles (2009)

S09E23 A Line in the Sand

Title: A Line in the Sand Plot: Following Sam's injury from gunfire in a clash with the cartel, an interrogation of a suspect leads to unexpected revelations about Spencer Williams, the individual responsible for the abduction of Mosley's son five years earlier. This new lead sets the team on a critical path to uncover the truth and bring justice to the long-unsolved case.