Frank Sinatra's anger issues — and his penchant for bragging about his mafia friends — made him a liability, says a new book, "Frank Sinatra and the Mafia Murders," by Mike Rothmiller.

Frank Sinatra giving press conference on the kidnapping of his son Frank Jr. On Dec. 8, 1963, news broke that Frank Sinatra, Jr., Sinatra’s 19-year-old son, had been kidnapped and held for ransom .