As Bill Cosby's trial gets underway today in Pennsylvania, this documentary looks at how this US comedy giant and African-American role model finally came to face a criminal trial for sexual assault a decade after the accusations were made. The film explores why it took so long for allegations - that he was privately drugging and raping women - to be taken seriously, with accusations from numerous women having fallen on deaf ears for years. Viewers will also hear from journalists, co-stars and alleged victims.