This week: Tensions rise as Luka and Clemente butt heads over how best to treat a young kidnapping victim, the kidnapper injures multiple members of the ER staff, Gallant's return home gets delayed, Dubkeno and Neela do an ex-lap in the ER, Ray gets the everloving crap beat out of him (much to Daniel's delight), Gates makes his debut and nearly gets his head blown off in the process, and Eve tries, but fails, to bring the ER staff together.