Olivia Nikkanen

Charles grows increasingly suspicious of a colleague’s intentions. Lenox crosses a line to protect a patient. Hannah and Archer treat a soon-to-be father battling cancer.

Reese is out of his element when The Machine's latest number sends him to the suburbs, forcing him to play house and go undercover in an idyllic neighborhood.

Charles races to convince a patient to accept treatment before it’s too late. Frost bonds with a young girl battling immunodeficiency. Lenox makes a chilling discovery.

As Kitty searches for a teenage runaway, Sherlock and Watson investigate the murder of a brilliant bioengineer; Joan makes a decision that she fears will impact Sherlock negatively.

Will's latest case - which could net the firm millions - hangs in the balance as Alicia navigates Louis Canning's attempts to delay a deposition crucial to Will's argument. Michael J Fox and T.R. Knight guest star.

Chalky heads in a new direction; Margaret finds herself in a quandary; Nucky hosts a prospective partner from Boston; Luciano and Siegel meet with Narcisse in Harlem; in 1884, young Nucky flirts with a girl.