VIDEO: Sneak Peek - Tonight's Season Finale of CBS's HOSTAGES

On tonight's two-hour season finale of CBS's HOSTAGES titled 'Suspicious Minds and Endgame,' after Duncan discovers Sandrine's betrayal, he decides to use her to save Nina and Sawyer. 

Also, just before Ellen is to operate on the President, the First Lady confronts her and forces Ellen to tell the truth about the assassination plot. The episode airs tonight,  Monday, Jan. 6 (9:00-11:00 PM, ET/PT) on the CBS Television Network. Get a sneak peek below!

HOSTAGES, from executive producer Jerry Bruckheimer, stars Emmy Award winner Toni Collette and Golden Globe Award winner Dylan McDermott in a high-octane suspense drama about Dr. Ellen Sanders, a premiere surgeon thrust into a chilling political conspiracy when her family is taken hostage by rogue FBI Agent Duncan Carlisle.

  Ellen and her family are held captive in their home by Carlisle, a desperate man doing the wrong thing for the right reasons, who orders her to assassinate the President when she operates on him.  His  highly  skilled  accomplices  include his brother-in-law Kramer, whose loyalty to Carlisle will be tested; quick-tempered and intimidating Archer, an ex-military man with a razor-sharp tongue; and the only woman involved, Sandrine, a mysterious last-minute replacement to the team.  

With her family's life in peril, Ellen faces an incomprehensible moral dilemma in order to save her overbearing husband Brian, her secretive daughter Morgan and her not-so-innocent son Jake.  In this high-stakes standoff between Ellen and Carlisle, fraught with tremendous national and personal consequences, the choices between right and wrong become even more blurred.