The Toff in New York

Over the weekend I read "The Toff in New York" by John Creasy. The Toff is an English gentleman who is also an amateur detective. He goes over to New York to help a sister of a friend, but very quickly there is murder and kidnapping. There was one scene where he was getting tortured  and he jumps from the roof of a skyscraper to a ledge below. It was exciting stuff.