Merlin's Katie McGrath will lead the cast of new Canada-based horror series Slasher.
The eight-episode psychological thriller will also star The Killing's Brandon Jay McLaren and Saving Hope's Wendy Crewson, according to ET Canada.
Merlin S05E12: Morgana (KATIE McGRATH)

The actress, who recently starred in Jurassic World, will play Sarah Bennett, a young woman who returns to a small town years after the brutal murder of her parents.
A series of copycat killings have been plaguing the town and she finds herself in a situation where everyone is a potential suspect or victim.
Creator, writer and executive producer Aaron Martin said: "With Slasher, I wanted to tell a modern-day monster story but instead of a mythological creature, the 'monster' in our series is all too human."
He also spoke about being a fan of the horror genre, saying: "The series is a fusion of some of my favourite thriller genres - the classic slasher film, the contemporary murder mystery and the timeless works of my favourite crime writer, Agatha Christie."
Filming has already started and Slasherwill debut sometime next year.