Also known as: PTSD
Police officer Aaron is suffering from PTSD after fatally shooting an unarmed suspect. He struggles with guilt and replays the traumatic event, eventually revealing he may have lied about the suspect reaching for a weapon. The episode centers on Sheldon's decision about whether Aaron is fit to return to duty.
Also known as: Brain tumor
Mason's mother Erica is secretly dying from a rare and aggressive brain tumor called gliosarcoma. She exhibits neurological symptoms including hand weakness and eye tracking problems. Charlotte discovers her diagnosis and prognosis of 6-9 months but is threatened into keeping it secret from Cooper to protect Mason's childhood.
Also known as: Psychotic break
Mr. Bauer is brought to the hospital after being found yelling at a fire hydrant. He becomes agitated and threatening, claiming to have knives. Violet successfully de-escalates him and administers haloperidol to manage his acute psychotic episode.