Olivia Nikkanen

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.

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.

Kara and Alex head home to Midvale for a little R&R. While there, Kara recalls a painful memory of a childhood friend's death and how that traumatic experience brought the Danvers sisters closer together. IZABELA VIDOVIC plays Young Kara and OLIVIA NIKKANEN plays Young Alex in flashbacks.

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.