ER

Halloween night finds the ER awash with allergic or otherwise incapacitated children. Kerry tolerates a visiting candidate for chief while she waits for the official vote. Romano operates on an 11-year-old girl and finds she's genetically male. Carter leaves Lucy in charge of a dorm party he's supposed to be overseeing, with unfortunate results. Mark learns that Jenn's moving to St. Louis--with Rachel. Mark and Carol treat a pregnant schizophrenic.

Vince Vieluf, Justin Doran, Jana Lee Hamblin, Sean A. Tate, Shannon Cochran, George Perez, Morina Pierce, Tim Halligan, Evan Sabara, Sheila Kelley, Christian Hoff, Brian Leckner, Monica Mikala, Angelo Tiffe, Philip Casnoff, Jimmie F. Skaggs, Kevin Berntson