The original Mentalist team will be back together once more in "Grey Water."

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Set to air as the season's 14th episode, "Grey Water" will reunite Patrick Jane (Simon Baker), Teresa Lisbon (Robin Tunney), and Kimball Cho (Tim Kang) with Wayne Rigsby (Owain Yeoman) and Grace Van Pelt (Amanda Righetti) as the latter continue their investigation into the illegal monitoring of former CBI members.

Following the events of "The Golden Hammer," Rigsby and Van Pelt have discovered that key members of their old team - including themselves - are being tracked by an unknown entity. What's more, whoever is keeping tabs on the old crew murdered Oscar Ardeiles (David Norona) when he got to close to the truth.

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During episode 13, the duo will seek help from their old internal affairs nemesis, JJ LaRoche (Pruitt Taylor Vance), and Rigsby and Van Pelt will be equipped with a list of suspects by time they head to the FBI in Austin.

Unfortunately, "Grey Water" will be the penultimate episode for the married couple. Now that the series has moved on into the post-Red John world, Dennis Abbott (Rockmond Dunbar) and Kim Fischer (Emily Swallow) have effectively taken the places of the long time characters. Rigsby and Van Pelt will make their last appearance in episode 15, "White as the Driven Snow."

The Mentalist airs Sundays at 10 p.m. ET. Scroll through the gallery above to see what the team is up to in "Grey Water," and click the video below to see a preview of the series' most recent episode.