Guest Stars Samuel Hunt as Craig "Mouse" Gurwitch Stella Maeve as Nadia Decotis Nick Gehlfuss as Dr. Will Halstead Eamonn Walker as Battalion Chief Wallace Boden Jesse Spencer as Matthew Casey Mariska Hargitay as Sergeant Olivia Benson Ice-T as Detective Odafin "Fin" Tutuola Dallas Roberts as Greg Yates Danny Pino as Detective Nick Amaro Peter Scanavino as Detective Dominick "Sonny" Carisi Co Starring Jeff Parker as Dr. Smith Tiffany Bedwell as Victoria Lewyn Laura Lapidus as Janine Rachel Melius as Charlotte Reegan Uncredited Steve Zirnkilton as Opening Narration
