Charles takes Empirical and Millennial to the world’s biggest annual book fair in Frankfurt, Germany; where Liza receives an offer that could uncomplicate her life.

Liza is distressed when she meets Caitlin’s middle-aged boyfriend; Diana refuses to back down from a challenge; Josh rebrands.

Liza and Kelsey find themselves at odds when a self-made billionaire pitches a book on power to Millennial; Lauren proves her worth.

After the holidays, Liza adjusts to a new normal; Maggie confronts buried issues; Kelsey course-corrects her love life.

It’s Christmas in New York; Liza celebrates with Caitlin; Kelsey finds herself caught up in a web of her own making; Charles makes up his mind.

Charles calls in Liza after running into trouble with a rock-star author on Shelter Island; Maggie reaches a career milestone.