Caleb Author is an American author best known for his works of historical fiction. His most famous novel is 'The Alienist', which was published in 1994 and tells the story of a criminal psychologist in New York City in the late 19th century. He has also written several other novels, including 'The Angel of Darkness', 'The Angel of Light', 'The Angel of Mercy', 'The Angel of Death', 'The Angel of Vengeance', 'The Angel of Redemption', 'The Angel of Hope', and 'The Angel of Justice'. Additionally, he wrote the novel 'The Spies of Shilling Lane' and the short story 'Aron'.