It looks like Mentalist fans will be left in suspense as "Brown Eyed Girls" spills over into "Black Hearts."

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Patrick Jane (Simon Baker) and Agent Lisbon (Robin Tunney) will launch an investigation into a human smuggling ring during episode 20 ("Brown Eyed Girls) and the story may make a seamless transition into episode 21 ("Black Hearts").

When Jane and Lisbon meet a suspicious stranger during "Brown Eyed Girls," their law enforcement Spidey-senses will put them on the trail of a human trafficker. However, the case will not be so cut and dry that it can be packaged into one hour.

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Instead, the story will leak into "Black Hearts," during which the FBI will continue to collaborate with a hospitalized victim, Daniela Welker (Zuleyka Silver) in order to locate her sister, Amy Welker (Nandy Martin). Thanks to Instagram photos from the two actresses, fans can get an advanced look at their new roles (see photos above). While Silver can be seen donning a hospital gown, Martin will probably be fighting for her freedom somewhere outdoors, if the dirt on her clothing is any indication.

Meanwhile, Jane and Lisbon will have their own drama to work out as Lisbon contemplates relocating to D.C. with Agent Pike (Pedro Pascal).

The Mentalist airs Sundays at 10 p.m. ET on CBS. Click the video below to see a preview of "Brown Eyed Girls."