S1, E4: After finding out that Charlie’s condition hasn’t improved, Alex is growing concerned about his chances of recovery. Her worries are exacerbated when she detects a crackling in Charlie’s chest. Does he have pneumonia? To keep her mind active, an already exhausted Alex takes an overnight shift in the ER. Hoping for a peaceful “treat ‘em and street ‘em” kind of night, the ER instead turns into a hotbed of activity when a hockey superstar comes in with injured ribs from a street fight, and soon after a young man stabbed in a nightclub is rushed in by ambulance. The stabbing victim falls into a coma and meets Charlie. While Charlie tries to prepare the kid for a long stay on the spirit side, he impresses Charlie by willing himself to wake up and return to his body. When he ultimately falls unconscious again, he tells Charlie about his plans for revenge. Meanwhile, Alex suspects the hockey player has a concussion, but when she mentions the dreaded “C word” he heads for the exit – only to be stopped by gunshots going off in the ER; friends of the stabbing victim getting payback. With the hospital in lockdown, Alex can pursue her diagnosis.