Who's Calling? is the fifth book in Helen McCloy's Dr Basil Willing Mystery series. Wouldn't you like to know what a poltergeist is? The engagement of Archie, a young doctor, to night club artiste Frieda sets off a sequence of eerie and seemingly unexplainable events, all starting with a strange, cruel warning on the telephone. As the supernatural mysteries continue, a shocking murder takes place - and that...