New York City, 1925. In the midst of Prohibition, crime boss Arthur Pendragon and his gang, the Knights of the Round Table, arrive from London to open a speakeasy in Chelsea. Fearing they'll lose their hold on Manhattan's West Side, the Black Kings send Merlin Emrys to spy on the Knights. The two gangs quickly become rivals, and there is no place for love in war.

In the year 2019, Eleazar Inc. is a pharmaceutical company on the verge of creating a serum to cure all illness, including the ultimate disease: death. Arthur has been resurrected; Merlin cannot die. Is the key to Eleazar's success locked in their DNA?

Ten years to the day, and Arthur still feels like he's walking around in a dream. (An epilogue of sorts to The Only Moment We Were Alone.)

During a trip to Forest Sauvage, Merlin learns of a plot to overthrow Arthur and bring war to the five kingdoms; and Arthur learns that Merlin has magic.

When Arthur takes his nephew, Mordred, to a birthday party at Build-A-Bear Workshop, he meets a certain blue-eyed, dark-haired employee with a seemingly perceptual grin; but it turns out Merlin isn't always smiling.

CROSSOVER: PART THREE OF THE SUPERWHOMERLOCK "HAUNTED MEN" TRILOGY. Silence will fall when the Once and Future King Rises.

CROSSOVER: PART OF THE SUPERWHOMERLOCK "HAUNTED MEN" TRILOGY. Merlin gets a visit from an old friend.

BASED ON THE PARIS FLASHBACK IN "THE ONLY MOMENT WE WERE ALONE." They say Paris is the best place to fall in love.

In 1940s England, the son of a wealthy hospital benefactor and his manservant are separated when their love affair is discovered. When Merlin Emrys is committed to an experimental hospital ward to be cured of his deemed mental affliction of homosexuality, Arthur Pendragon will stop at nothing to get him back. BASED ON THE PSYCHOLOGICAL EXPERIMENTS OF DR. WILLIAM SARGANT.

BASED ON DEXTER. Arthur Pendragon: blood splatter analyst for the London Metropolitan Police by day, vigilante serial killer by night. Following Uther's Code, Arthur only kills those who truly deserve it. However, when a new killer who could know the mysteries of Arthur's past arrives in town, it gets harder for Arthur to conceeal his secret from his life-long friend, Merlin Emrys.

CROSSOVER: SUPERWHOMERLOCK. SEQUEL TO WHERE ANGELS TREAD. When the Winchesters, Merlin, and the Doctor and Clara get trapped inside a universe in which they never existed, Castiel enlists the help of Sherlock Holmes to get them home.

CROSSOVER: SUPERWHOMERLOCK. When Sam gets trapped by the Weeping Angels in medieval Camelot, Dean employs the help of some strange new friends to get him back. Meanwhile, Sam and Merlin stumble upon a plot that may kill the king.

Merlin has waited for Arthur too long, and has turned to drugs to ease the pain and loneliness. Now that Arthur's back, he can stop any time he wants. Only, he doesn't want to.

Merlin gets a chance to spend one more day with Arthur.

CROSSOVER: SUPERNATURAL/DEXTER. Dean and Sam team up with Miami Metro to resolve a string of unsolved murders, but they aren't the only ones doing the hunting.