Due to the gap in production, many original actors' contracts had lapsed, leading to a substantial "revamp" of the supporting cast.
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. Unforgettable - Season 4
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. Due to the gap in production, many original