4: Unforgettable - Season

: New detective Denny Padilla was introduced with a clear interest in Carrie, creating friction with Al. Final Cancellation

: Plots ranged from investigating high-stakes video game corporate espionage to a cold case involving con artists and a secret aerospace engineering mission.

After CBS passed on a fourth season in 2014, Sony Pictures Television successfully shopped the series to A&E. The season premiered on November 13, 2015, airing back-to-back episodes on Friday nights. The move was partly driven by the show's strong international performance, which allowed for a more affordable licensing fee for the cable network. Major Cast Changes Unforgettable - Season 4

Due to the gap in production, many original actors' contracts had lapsed, leading to a substantial "revamp" of the supporting cast.

: The romantic tension between Carrie and Al remained a central theme, though they prioritized their professional relationship. : New detective Denny Padilla was introduced with

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.

The season continued to follow Carrie Wells, a detective with hyperthymesia (perfect recall), as she and her partner Al Burns solved complex crimes. The season premiered on November 13, 2015, airing

: 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