This week: Neela and Gallant have a surprise and mostly improvised wedding, Pratt tries to help KJ after KJ is falsely accused of stealing a camera, Luka is your new ER chief, Abby goes the extra mile to save a patient’s life, Clemente is furious after an HIV+ mom refuses to treat her young boy for AIDS, Dubenko ups his recruiting game, and a long dormant relationship is suddenly reignited.