Grace Van Pelt's life is on the line and it's up to Patrick Jane to save his former colleague in the character's Mentalist finale.

Old CBI Team Reunites In 'Grey Water', Penultimate 'Mentalist' Episode For Rigsby & Van Pelt

Van Pelt (Amanda Righetti) and Wayne Rigsby (Owain Yeoman) are set to depart the CBS drama following "White as the Driven Snow," but one of the longtime characters may not live to see the end credits.

The Rigsby's blissful post-Red John life was interrupted by the murder of Oscar Ardeiles (David Norona) in "The Golden Hammer), and now the married couple is in hot pursuit of a unknown entity that is keeping tabs on the CBI's previous employees.

An Old Enemy Returns To 'The Mentalist', Patrick Jane Crosses The Boarder In 'Black Helicopters'

After heading down Texas to join forces with Lisbon's (Robin Tunney) new FBI team during episode 14, "Grey Water," the couple's investigation will take an unexpected turn when Van Pelt is abducted in episode 15, "White as the Driven Snow."

When the team's lead suspect gives an airtight alibi, the situation begins to look grim. Unfortunately somebody will head to the hospital before the case has run its course. Could Van Pelt meet a tragic end?

Rigsby's young son, Ben (Derek Dinniene), will also feature in the episode.

The Mentalist airs Sundays at 10 p.m. ET on CBS. Click the video below to see a preview of the series' next episode, "Black Helicopters."

Tags: The Mentalist CBS television