Ben gets a job offer, forcing Leslie to think about their future; Ron and Andy take Diane's girls trick-or-treating; Tom looks for a new business idea.
House and the team investigate when the health of a roleplay knight named `Sir William' begins to rapidly deteriorate. Meanwhile, Wilson starts over with a former flame.
After Reeves sees his friend get kidnapped, the team discovers the primary suspect disappeared two days ago with confidential military information.
When Aiden Hanna's plane crashes and he is accused of being at fault for the accident, the NCIS team must investigate to clear his name; Rountree considers how he wants to handle the aftermath of the incident with the LAPD.
The Vulture makes an unwelcome return to Peralta and Santiago's lives. Boyle and Diaz must track down kidnapped NYPD horse Sergeant Peanut Butter.