Beverly Barlowe resurfaces in Eureka seeking Carter’s help to free the Astraeus crew, and the rescue plan lands Carter in the crew’s virtual world.

Shawn and Gus investigate the death of Leonald Callahan, aka Diddle, a computer cryptologist who was the baritone in Gus’s old college a capella group.

The city waits for another visit from who they think is Batman. Alice continues to taunt Kate. Mary gets an unexpected new friend. As Batwoman faces a new enemy, Kate…

David – aka John Doe – must choose between staying with Kathryn or leaving her to be with Mary Margaret, with whom he’s fallen deeply, and inexplicably, in love; and…

Morgan and Shaun’s indecision on how to treat a young violinist who visits the ER with an infected finger could affect her future in more ways than one. Meanwhile, Lim,…

Dr. Shaun Murphy and Dr. Claire Browne devise an experimental procedure that can save the leg and life of a young groom, that is if his bride-to-be and parents can…

Now that Violet knows where the 3 Pages are, she returns to Fort Collins with Axel and Julius.

Barry is thrilled when Oliver, Felicity and Diggle come to Central City to investigate a case involving a deadly boomerang.

Kovacs recruits an unlikely partner to watch his back during a banquet at the Bancroft home, where Ortega oversees the night’s grisly entertainment.

Sam and Dean track down the missing Crowley and discover that he’s now thoroughly addicted to human blood. Once they get him sober, the brothers go seeking the First Blade…