Barney wants Robin to become an American citizen; Lily joins Marshall and Ted on their road trip.
Frasier and Niles try to boost their masculinity by taking an automobile repair class.
In the wake of a sculptor's murder in New York, Holmes and Watson must determine whether a long-dormant serial killer has resurfaced; Watson suspects Holmes is keeping something from her regarding tech billionaire Odin Reichenbach.
Hannah and her mother attend a female-empowerment retreat; Shoshanna gets a surprise visitor in Japan; Jessa asks her sister for a favor.
Erin and Frank clash over new legislation from the district attorney's office that undermines Frank's policies; Erin is at odds with Governor Mendez over questionable sex-trafficking laws; Danny risks his badge to protect a friend from losing his.