Spoilers ahead for Episode 21 of Law & Order Season 22, called "Appraisal."
The Law & Order team had a birthday to celebrate in "Appraisal" as Cosgrove turned 50, but the episode wasn't exactly a party for him as he and Shaw investigated the murder of an artist and disappearance of her art dealer. Cosgrove took a bullet in the process of saving the dealer in the very same episode that he shared that he had a job offer in private security in Florida. Given that this was the last episode before the finale, I initially thought the show was building his possible departure up as a cliffhanger, but in a surprise twist, getting shot helped convince Cosgrove that he needed to stick around.
