Kerryman Bill Fuller, was one of the most influential but mysterious music promoters of the 20th century. In the 1950s he was reputed to be the biggest music promoter in the world, handling acts such as Nina Simone, Patsy Cline, Willy Nelson, Billie Holiday and Johnny Cash. At one point he owned 23 music venues including the iconic Fillmore West in San Francisco,The Electric Ballroom in Camden Town and Manhattan's City Centre Ballroom. As his family uncover the threads of an extraordinary life, it's what he left unsaid that will astonish audiences until the end