We meet Emil, a sketch artist who also hears "voices," implying that Nick and Hailey aren't the only ones with imaginary companions. Episode Details Information Title "When Christmas Was Christmas" Original Air Date December 20, 2017 Director/Writer Brian Taylor Main Cast Christopher Meloni (Nick Sax), Patton Oswalt (Happy)
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The episode builds to the first physical confrontation between Nick and the "Very Bad Santa" (the kidnapper). In a brutal alleyway fight, Santa gains the upper hand, nearly killing Nick with a crowbar.
Flashbacks reveal Nick’s past life as a detective on the NYPD force, his secret affair with partner Meredith McCarthy, and his strained relationship with his pregnant wife, Amanda.
The episode ends on a frightening cliffhanger when the "Very Bad Santa" reveals he can actually see Happy, the imaginary blue unicorn, shattering the idea that Happy is only visible to Nick.
Viewers learn that even seemingly minor background characters, like a prostitute from the first episode, were actually part of Nick's past as a police officer.
