MTV's Scream Announces Premiere Date and New Potential Murder Victims

Santiago Segura (Silicon Valley) also nabbed a series regular role as Santiago, a "dark and brooding" outsider that loves serial killers, horror and comic books.

Anthony Ruvivar (American Horror Story), Austin Highsmith (Criminal Minds), Broadway actor Sean Grandillo and Karina Logue (Ray Donovan) also join the cast as recurring guest stars - which means they either have roles in the Lakewood flashbacks or they are bait for the new killer.