Of Past Regret and Future Fear - S4-E20
Continuity mistake: After Anna tells Tina Marie she might have kidney problems, Tina grabs her husband Emmett's hand and then puts her other hand over it; the next shot shows her hand is still on the tray and then she moves it to cover Emmett's again.
Of Past Regret and Future Fear - S4-E20
Continuity mistake: When Carter is trying to get his cousin Chase to draw a picture, sometimes there is a glass of juice on the tray and sometimes there isn't.
Of Past Regret and Future Fear - S4-E20
Continuity mistake: As Carter's grandmother is asking him if he'll be at his grandfather's dinner, we see him pick up a mug by its handle - but the next shot, from behind his shoulder, shows him holding the mug by the side.
Answer: A man named Paul Sobriki comes into the ER in the season 6 episode 13 " All in the Family." He is complaining of headaches, Carter and Lucy decide to rule out meningitis and do a lumber puncture. Paul struggles during the procedure and believes that both doctors are stabbing him. Lucy, who is interested in Psych thinks something is wrong with their patient mentally, but Carter is dismissive of her. She gets cross with his attitude and she calls the psych department anyway to have a look at him. Later on and near the closing 20 minutes or so of the episode, all the staff start playing loud music and get a cake which appears to be blue lol, together to party as it's Valentines Day, Carter returns from somewhere and asks where Lucy is. He goes to check one of the rooms for her and Paul Sobriki comes up behind him in the dark and stabs him twice in the lower back, he collapses and as he falls unconscious he sees Lucy on the ground also. In the next episode, Be Still My Heart (ep 14), Dr Weaver discovers them and all of the staff work to try and save them, whilst Carter survives. Lucy's wounds are fatal and suffers a pulmonary embolism as Corday and Romano try to save her. Carter is grief stricken and feels guilty about the way he treated her, he becomes addicted to painkillers and Benton, Greene all help him and book him into rehab.