Linda Schmidt, an unlucky in love flight attendant, goes missing after leaving her apartment for a late night flight. After the team find her car abandoned and unlocked, evidence surfaces that suggests Linda's disappearance may be connected to the case of a woman found murdered two weeks earlier. However, when the missing woman's flatmate tells the squad that Linda was having an affair with a married man and was confronted by his wife recently, the focus of the investigation is shifted. Jack gets help from Linda's psychiatrist and soon suspects that he may be hiding more than his patient's confidentiality.