A full moon brings an array of unusual cases to the ER, including nine naked fraternity pledges and a possible werewolf.
Peggy is worried that Al is picking up more than a spare on his bowling night.
The day's events bring all of our cops face to face with some of their greatest fears. The death of a baby shakes Lydia to her core. Sammy is questioned by I.A. about his altercation with Tammi. A difficult day on the job causes Cooper to seek solace in Hicks (guest star GERALD McRANEY) but finds none. Ben becomes more deeply involved with Brooke while continuing to see Elena (guest star CARMEN CORRAL).
As John and Chris get more serious in their relationship, Chris realizes that John is not as affectionate as she'd like him to be.
Balki and Mary Anne fall for look-alikes. First of a two-part episode.
