Night Shift

A long, cold night finds ER staffers with hours of time to kill.  Kerry recruits staffers to participate in a study on sleep deprivation combined with physical activity.  Gant appeals to Anspaugh after a public scolding from Benton.  Carter ditches Dennis again to escape his whining, only to discover deadly results.  Peter is denied a recommendation from Keaton one last time before she leaves for Pakistan.  Mark and Chuny discover that they have a lot in common.  Carol is at a crossroads when management demands she cut two RNs.  Charlie comes into the ER severely beaten.