The Mentalist's Patrick Jane and Teresa Lisbon rarely check their law enforcement reflexes at the door, which turns out to be a lucky break for the victims of a human smuggling ring during "Brown Eyed Girls."

Will Jisbon Pan Out In The Finale? Find Out What Patrick Jane & Lisbon Are Up To In 'Blue Bird Inn'

A momentary fleeting encounter with a suspicious stranger will prove to be a moment of serendipity for Lisbon and Jane. Between the faux psychics keen observational skills and FBI agent's cop sense, the pair will stumble upon a human trafficking case and launch an investigation to save a girl's sister.

As the investigation picks up, Jane and Lisbon will play out their own drama in background.

The Red John Case Is Back, Will Patrick Jane Stand Trial?

Lisbon is contemplating making a major change in her life, and Jane may be left in the dust. Agent Marcus Pike (Pedro Pascal) is thinking about accepting a job in Washington D.C., but his is unwilling to leave his new girlfriend behind. Solution - ask Lisbon to come with him.

Could Lisbon pack up and move for the third time this season? Fans will have to wait until the "romantic" season finale to see what she ultimately decides.

Scroll through the gallery above to get a better look at what Lisbon and Jane will be dealing with (personally and professionally) in "Brown Eyed Girls," and click the video below for a preview.

The Mentalist airs Sundays at 10 p.m. ET on CBS.

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