In this Tribeca Film Festival selection, director Esther Robinson paints an affecting portrait of her uncle, Danny Williams -- a talented young artist and former lover of pop-culture icon Andy Warhol -- who inexplicably vanished at age 27. Highlights include footage from Williams' 16mm films and interviews with colorful Factory personalities such as Brigid Berlin, John Cale, Gerard Malanga, Paul Morrissey and Billy Name.