Biography claims Martin had mob links

Late crooner Dean Martin was involved with the mafia and often performed for America's most notorious mob bosses, according to a new biography which exposes files collated by the FBI.

In his book Dean Martin: King of the Road, author Michael Freedland claims the That's Amore singer - who had denied links to the mafia until his death in 1998 - accepted the help of gangsters who owned saloons in Chicago during the early days of his career.