John Scot Barrowman

John Barrowman is widely recognized for his acting roles, particularly as Captain Jack Harkness in "Doctor Who" and "Torchwood," and as Malcolm Merlyn in "Arrow." He is also known for his extensive career in musical theater.

Yes, John Barrowman has co-authored several books, including the "Hollow Earth" series of young adult fantasy novels with his sister Carole E. Barrowman, and autobiographical works such as "Anything Goes" and "I Am What I Am."

John Barrowman frequently collaborates with his sister, Carole E. Barrowman, on his fiction projects, including the "Hollow Earth" and "Orion Chronicles" book series.