LIMITLESS Stages DEXTER Reunion: Desmond Harrington to Guest Star

There’s a DEXTER reunion coming on the new CBS drama, LIMITLESS.

Desmond Harrington (who played Quinn on the long-running Showtime series) has signed on to guest star opposite LIMITLESS/DEXTER star Jennifer Carpenter, a rep for CBS has confirmed. The Hollywood Reporter was first to reveal the casting.

Harrington will play Casey Rooks, an agent with the FBI who is tasked to give Jake McDorman’s Brian Finch basic training. But since Brian has taken the NZT that was introduced in the Bradley Cooper-led 2011 LIMITLESS film, Brian’s ease at picking up the training has Casey suspicious.

And, yes, Harrington and Carpenter will interact: according to THR, Casey and Carpenter’s Agent Harris are having a secret affair. (Their characters were also romantically involved on DEXTER.)

Harrington is set to first appear in LIMITLESS’ fifth episode.