Home > Culture & Lifestyle > Culture “She was the greatest. She’s irreplaceable,” the “Schitt’s Creek” co-creator says of his late co-star During his Tuesday night appearance on “The Tonight Show,” Dan Levy mourned the death of “Schitt’s Creek” co-star Catherine O’Hara , calling her passing “a collective loss.” O’Hara co-starred with Levy in “Schitt’s Creek,” the multi-season comedy created by Levy and his father Eugene. She was nominated twice for Emmys for her performance as Moira Rose, a