A Hacked Powergrid Imperils More Than Christmas Lights On NCIS: Los Angeles

Christmas is under attack! By ransomware, that is.

When the malicious software takes down the entire power grid of west L.A. in a brand-new episode of NCIS: Los Angeles—which airs, Sunday, Dec. 17 at 9/8c on CBS and CBS All Access—it's up to the Office of Special Projects to get down to the bottom of this cyber mystery.



Meanwhile, Sam (LL COOL J) is coming to terms with his first holiday season after the loss of his wife, and doesn't quite know how to celebrate.

STREAM: Full Episodes Of NCIS: Los Angeles On CBS All Access



Will the team find the source of this dastardly Christmas crime?

And how can Sam move forward this holiday season?

Watch all-new episodes of NCIS: Los Angeles on Sundays at 9/8c on CBS and CBS All Access.