Frank takes heat when a widow blames him for her husband's recent suicide while on the job. When Eddie has a gut feeling about a murder, she and Erin band together to solve the case. A desperate Luis Delgado tells Danny and Baez that the only way he'll testify against his former cartel is if they protect his sons.

Sandi Toksvig and Alan Davies are joined by Jo Brand, Phill Jupitus and Prue Leith.

Jimmy welcomes actor Martin Lawrence, playwright Matthew Lopez, actor Kyle Soller, and a musical performance by Karol G.