At Carrie's high school reunion, one of her classmates is murdered and Carrie searches her memories of high school for clues.
As Holmes and Watson work a standard murder investigation, they encounter MI-6 and find the case has international and political inferences. Watson re-examines her relationships with Mycroft and Sherlock.
When Carrie and Elliott are attending a party sponsored by the mayor, a group of criminals seizes control of the building, and demand a hefty ransom. It is up to Carrie to thwart their plans by playing from the Die Hard book.moreless
A murdered body washes ashore in the Hamptons, and Carrie and Al's boss offers them a "paid vacation" in his beautiful Southampton cottage, in order to help local law enforcement find the killer, who may or may not be related to a previous serial killer.moreless
A surprise visit from Sherlock's brother Mycroft leads to discord between Holmes and Watson. Meanwhile, Sherlock and Joan investigate a missing person's case that takes them into the world of unmanned aeronautics.
Holmes and Watson chase the source of a lethal toxin after a pickpocket dies of anthrax poisoning.
Raylan tries to get Wendy to wear a wire to catch Darryl confessing. Ava loses her protection in prison, so takes matters into her own hands to gain her credibility back. Boyd, once again finds himself in hot water with the cartel and is accidentally rescued by the Marshals.moreless
Carrie and Al pose as a married couple to catch a killer who may be responsible for a series of unsolved homicides that Al investigated years earlier.
Holmes and Watson investigate when a presumed dead serial killer looks as if he's killing again.
Ava has gained new friends, but is still in hot water. Meanwhile, Raylan hassles every crook in town in the hopes of arresting Darry Crowe.
Mullen is badly injured protecting Allison and Ava deals with the aftermath of killing Judith.
Dewey attempts to cash out with the stolen heroin, finding himself pursued both by Daryl and Raylan. Ava decides to stop seeking Boyd's help and try to make it in prison on her own.moreless
Holmes and Watson investigate when an influential cancer researcher is murdered. They must figure out if his new cutting-edge invention played any part in his death. Detective Bell is given clearance to resume field work.moreless
Raylan heads to Memphis to help a Detective bring down a criminal. Ava keeps herself safe in prison be securing a drugs line.
Holmes and Watson are called in to consult when a woman, who was thought murdered by her husband years ago, appears now to be a victim of a kidnapping after her husband receives a ransom demand. Holmes and Watson are eager for Lestrade to leave the brownstone but he doesn't seem inclined to do so.moreless
Boyd and the Crowes struggle to get four dead bodies across the border in order to keep an important business relationship.
Raylan pursues a hacker who makes his life difficult by wiping out his bank account and credit cards. Boyd and the Crowes head to Mexico to make a heroin deal, but run into unexpected trouble.moreless
Raylan goes hunting for Danny Crowe after Alison is forced off the road. Boyd make sure this time that Ava is safe.
Raylan tries his best to get the Crowes out of Harlan which may be trickier than he thought.
As Watson peruses one of Holme's cold cases, she figures out that a rare prehistoric fossil is tied to the unsolved murder. Sherlock is in uncharted territories as concerns his duties as a sobriety sponsor.moreless
Dewey receives orders to kill Wade Messer and Boyd visits Johnny to question him on his betrayal.
Raylan takes over a mansion once run by a mob accountant.
Boyd does his best to get Ava out of jail and Raylan helps out an old pal.