In preparation for a role, a world-renowned actress shadows the NCIS team as they investigate a decapitation case.

During a crucial week, Zach takes two lucky women on jaw-dropping one-on-one dates featuring prehistoric creatures and a romantic musical performance.

Shaun invites Aaron to stay with him while he has exterminators at his house and Lea realizes both men have a lot more in common than she realized. Meanwhile, Dr. Morgan Reznick wrestles with a big decision about her career and her personal life.

Jimmy shares his favorite inspirational quotes to help everyone kick off their week with good vibes in Monday Motivations before speaking with guests Ashton Kutcher and Alison Brie and welcoming musical guest Dermot Kennedy.