Mekhi Phifer will soon debut on Lie to Me.

The former ER star chatted with E! Online about her role on the Fox series.

"There's a serial rapist who also blinds his victims, and they assign me to this case and assign the Lightman Group - we're forced to work together. We have our own methods of reaching a goal, and so we're kind of at odds a little bit, but I think at the end of this episode we sort of have a mutual respect for how the other works," the actor said. "I get physical, but as you can see, I stay pretty. I don't get my ass whopped. I'm whopping ass!"

Might Phifer might be around longer than the two previously-announced episode?

"Possibly. Possibly for the duration of the show."

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