BRIAN LEARNS A SHOCKING SECRET ABOUT REBECCA'S LATE FATHER BUT WORRIES THAT TELLING HER WILL LAND HIM IN LEGAL TROUBLE, ON "LIMITLESS," TUESDAY, OCT. 20

Desmond Harrington Reunites with His "Dexter" Co-star, Jennifer Carpenter, When He Guest Stars as FBI Agent Casey Rooks

"Personality Crisis" - Brian learns a shocking secret about Rebecca's late father but worries that telling her will land him in legal trouble. Also, Brian accidentally meddles in Rebecca's personal life while learning self-defense from her secret boyfriend, FBI Agent Casey Rooks (Desmond Harrington)
, on LIMITLESS, Tuesday, Oct. 20 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Desmond Harrington reunites with his "Dexter" co-star Jennifer Carpenter when he guest stars as FBI Agent Casey Rooks.

REGULAR CAST:

Jake McDorman (Brian Finch)
Jennifer Carpenter (Agent Rebecca Harris)
Mary Elizabeth Mastrantonio (SAC Nasreen "Naz" Pouran)
Hill Harper (Agent Spelman Boyle)

WRITTEN BY: Sallie Patrick

DIRECTED BY: Joshua Butler