As teased in a previous trailer for Dexter Season 8, the doctor will soon be in.

But might this mean our favorite serial killer will soon find himself in a world of trouble?

Charlotte Rampling will play a critical role on the Showtime smash this summer, recurring throughout as Dr. Evelyn Vogel, referred to in the following preview as "The Psychopath Whisperer."

It's not hard to see how such an individual could cause a problem for Dexter, is it? Watch now as she interacts with the titular character and even inquires about the Bay Harbor Butcher. How much does she know? How much can she figure out? And what will Dexter do about it?

The final season of Dexter kicks off on June 30.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.