The detectives investigate a cult after a 12-year-old girl is hospitalised with pregnancy complications. They realise the father of the unborn leader is a religious fanatic, but struggle to track him down.
Sam finds himself in the midst of a dangerous house call; Pete and Addison decide to take their relationship to the next level; Violet enters a friends-with-benefits pact with Cooper.
Pete treats Charlotte's insomnia, Naomi goes on her first date since college and a patient asks Addison to conceal her fertility from her husband. When trying to help a patient caught between Sam and Cooper, Dell's secret is revealed.