On tonight's season finale of NCIS: Los Angeles, G. Callen races against a ruthless adversary to locate a woman who knows the whereabouts of a forgotten fortune.

These vast riches have been earmarked to fund a new war in the Middle East. As if those stakes weren't high enough, there's also the mystery of Callen's own past.

In the newly-released clip below from the episode, "Callen, G" (see promo and photos), the title character receives a startling piece of information on that front ...

[video url="http://www.tvfanatic.com/videos/callen-g-sneak-preview/" title="Callen, G: Sneak Preview"] [/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.