Dexter has filled its two major Season 8 roles.

A very short while after news hit that Charlotte Rampling has been cast as a criminal profiler/neuro-psychiatrist, we can confirm that Sean Patrick Flanery will recur this summer on the Showtime hit as a private investigator named Jacob Elroy.

The actor (Breaking In, The Young and the Restless) will play a former cop who many believe will help track the killer of La Guerta.

Showtime has not yet committed to Dexter Season 8 being the final chapter of this story, but it has announced that the series will return in summer, as opposed to its regular fall time slot.

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