Tyler Jacob Moore

The BAU team profiles a serial killer who uses the Internet as his hunting ground, bringing a whole meaning to the term "social networking."

Jimmy Palmer becomes the target of a mysterious killer who only he can recognize.

When an icy spell is cast on Marian, which will ultimately freeze her heart and kill her, the Storybrooke residents place the blame on Elsa. Plus, Regina teams up with Henry to try and discover who the author of the fairy tale book is. Meanwhile, in Arendelle of the past, Elsa and Kristoff set off to stop Hans from attempting to take control of the kingdom.

As the Spell of Shattered Sight approaches Storybrooke, Mary Margaret and David rally the residents to prepare for the curse while Belle and the fairies work together on an antidote. Gold, with Hook as his reluctant servant, sets about an exit strategy of his own. Regina and Robin Hood ready themselves for the worst while, with the help of a locator spell, Emma and Elsa search desperately for Anna. In Arendelle, Anna and Kristoff awaken to find that their kingdom is once again in danger.

Cooper and Pete share a father-daughter case in which both patients have Cystic Fibrosis; Addison and Wyatt make a connection when they work on a procedure that is highly experimental but may save a girl's life; Violet tries to juggle her relationship with both Pete and Sheldon.