S12E22 "Twenty One Guns"

Setting the Tone: An ER Retrospective

This week: Sam and Luka get caught up in Steve's attempt to escape prison, Kerry is under fire for hiring Clemente in the first place, Pratt helps Neela get the closure she needs at Gallant's funeral, Morris is very picky with his patients on his last day at County, Abby consider's Luka's sudden proposal, and a shootout erupts in the ER that leaves everyone's favorite desk clerk in critical condition.