Tyler Christopher, best known for his role as Nikolas Cassadine on the soap opera “General Hospital,” has passed away at the age of 47. His co-star Maurice Benard announced the news on Instagram, praising Christopher’s talent and advocacy for mental health and substance use treatment. Christopher had also appeared on other shows such as “Days of Our Lives” and “The Lying Game,” and had a successful career in TV disaster movies. He is survived by his two children.