NCIS: Los Angeles

After Granger is poisoned by the mole and Eric is one of the seven suspects, Hetty orders a lockdown while everyone is investigated.

Sam reflects on his own upbringing and relationship with his father when the team investigates the murders of marines who have sons in military academies.

The team investigates a burglary at a cyber-security company, but Callen must steer clear of the crime scene after Hetty reveals his girlfriend, Joelle, is one of the lead witnesses. Also, the team discusses their personal holiday travel plans.

While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage.