Holmes' relationship with his father suffers a setback when he discovers Morland has been keeping a secret that threatens their safety. Meanwhile, Sherlock and Watson investigate two murders linked to a college and its illegal recruitment practices.moreless
Morland offers to act as one of Sherlock's "Irregular" consultants to help his son and Joan solve a case.
A kidnapping gives Reid the opportunity to recover recent events and re-build his team, when tackling a white slave gang. However, a secret from his past comes back to haunt him.
The murder of a brilliant engineer is discovered, just as a shipping magnate arrives in London to acquire a failing English company.
Election day arrives and Nucky prepares for change. Torrio sets up a potentially hostile deal between two bitter rivals.
Margaret tries to help Madame Jeunet with her money troubles by speaking with Nucky. Jimmy is forced to return to Chicago to deal with the D'Alessio brothers and Nucky gets ready for war with a rival factionmoreless
Nucky gets troubling news while visiting the Republican National Convention in Chicago.
Jimmy becomes friends with a fellow veteran who lost half his face in the war. Luciano and Meyer Lansky make a deal with the D'Alessio brothers and Nucky deals with some unpleasant childhood memories.moreless
Al and Jimmy negotiate with a supplier in Greektown. Nucky organizes a surprise party for a U.S. Senator, lobbying him to get more roads to Atlantic City. Chalky, with the aid of Elias, investigate Chalky's driver's lynching. Jimmy settles in with Al and his boss, Johnny Torrio.moreless
Jimmy finds himself in trouble when a dying witness fingers him for the murders in the woods. Chalky's deal with Nucky hits trouble when his driver is lynched. Margaret gets a job at a boutique.moreless
Nucky is paid a visit by Agent Van Alden who feels a crime is being pinned on a scapegoat and wants some answers, forcing Nucky to close ranks on all his operations. He visits his old mentor, Commodore Louis Kaestner regarding the womens right to vote and later meets with Margaret Shroeder, still recovering from the beating she received from her now deceased husband, who has asked for help with her children.moreless
Unwilling to trust any Terminator, Derek searches and finds the T-888 brain chip Cameron hid. When John accesses the data on it, he finds a potential way to stop Skynet and change his future by sabotaging a computerized traffic system. However, Cameron will have to trust her fate to John, because if Derek has his way she will not come back from the mission. Elsewhere, Cromartie looks through school records in search of John.moreless
The stranger fights for his life, lapsing in and out of consciousness, during which he flashes back to his future life battling the machines in 2027. Meanwhile, Sarah tries to explain the past to Charley.moreless