David Ajala (born 21 May 1986) is a British actor. He is known for his roles as Manchester Black in Supergirl (2018–2019), Captain Roy Eris in Nightflyers (2018), and Cleveland "Book" Booker in Star Trek: Discovery (2020–present).
Jonathan Reid, a doctor who has turned into a vampire must come to terms with his undead condition, and deal with being torn between the Hippocratic Oath and his newfound bloodthirsty nature.
