AceShowbiz -

The upcoming TV adaptation of "Locke & Key" has added two actors to its growing cast. The Hulu series, which is based on the comic by Eisner Award winner Joe Hill (son of Stephen King) and Gabriel Rodriguez, has cast Danny Glover ("Lethal Weapon", "Predator 2") as Joe Ridgeway. Meanwhile, up-and-comer Jack Mulhern has been tapped to play Tyler Locke.

Joe is an "eccentric English teacher at Matheson Academy. After the gruesome murder of their father Rendell, the Locke family moves to Matheson. Joe becomes a mentor to the Locke children and a friend to Nina [Frances O'Connor], but he also knows some of the tragic secrets Rendell kept from his family."

Tyler, meanwhile, is the oldest son of Rendell and Nina Locke. He is depicted as a protective brother to his sibling. Following his dad's death, Tyler was forced to fill his father's shoes as man of the house. "Tyler's life is even more complicated after discovering his ancestral family home has magical keys that give him a vast array of powers and abilities."

The long-gestating show previously tapped "It" stars Jackson Robert Scott and Megan Charpentier to portray the other Locke children, Bode and Kinsey respectively. Also joining the cast is Nate Corddry, who is set to play the Locke kids' uncle Duncan Locke.

"Locke & Key" follows the story of a family who moves to their ancestral home (Keyhouse) in Maine following the horrific murder of their father. The kids later discover that the house has magical keys which give them various powers and abilities. Unbeknownst to them, a big bad demon also wants those keys and will stop at nothing to get them.

Hill writes the pilot, while "It" helmer Andy Muschietti serves behind the lens. Carlton Cuse ("Bates Motel") executive produces and serves as the showrunner. HIll, Lindsey Springer, Barbara Muschietti, Ted Adams, David Ozer, David Alpert and Rick Jacobs also executive produce.

"Locke & Key" is slated to premiere sometime in 2018 on Hulu.