Jimmy struggles to cope with Chuck's tragic death; Mike ponders his role at Madrigal; Howard makes a startling confession.

Holmes and Watson race to help Detective Bell when he becomes a victim of a bio-terrorism attack at the precinct and the station is quarantined. During the lockdown, Captain Gregson and Detective Bell begin to suspect they are trapped inside with the perpetrator. Watson faces the difficult task of helping her mother, Mary, accept that her advancing Alzheimer's disease requires her to receive more medical care.

Jimmy welcomes Glenn Close, Finn Wolfhard and musical guest Lauv.

Evan Rachel Wood and Aaron Paul talk all things Westworld, from working with drones to how their characters first meet.