The fourth season of marked a major turning point for the series, characterized by a move to a new network and a significant cast overhaul . Originally a CBS procedural, the show was picked up by A&E for its final 13-episode run after being canceled by its original network twice. Production and Network Transition
as Captain Sandra Russo, the team’s new boss. Alani "La La" Anthony as medical examiner Delina Michaels. E.J. Bonilla as Detective Denny Padilla.
: Poppy Montgomery (Carrie Wells), Dylan Walsh (Al Burns), and James Hiroyuki Liao (Jay Lee) were the only core regulars to return. New Regulars : Unforgettable - Season 4
: Jane Curtin, Tawny Cypress, and Dallas Roberts left the main cast, though Roberts made guest appearances. Skeet Ulrich joined as Carrie’s mysterious husband, Eddie Martin, a role originally played by Michael Dempsey. Season 4 Plot Highlights
: The romantic tension between Carrie and Al remained a central theme, though they prioritized their professional relationship. The fourth season of marked a major turning
Despite its "death-defying" history, the series was officially canceled for the third and final time on February 16, 2016, shortly after the Season 4 finale aired. A&E opted not to order a fifth season, and unlike previous cancellations, no further efforts were made to find a new home for the show.
: Plots ranged from investigating high-stakes video game corporate espionage to a cold case involving con artists and a secret aerospace engineering mission. Alani "La La" Anthony as medical examiner Delina Michaels
: New detective Denny Padilla was introduced with a clear interest in Carrie, creating friction with Al. Final Cancellation