A daunting task that continues to confront media makers is how to represent the unrepresentable—calamities and atrocities of unimaginable magnitude. The challenge is even greater when the media maker himself is a survivor. Such is the case for veteran filmmaker Rithy Panh, who has committed his life to probing and exposing the Cambodian genocide and its aftermath. Having toiled in labor camps as a boy and watched his entire family die, he prepares to grapple with this childhood. Using clay figures, archival footage, and live action, Panh materializes the missing pictures for us, his companion witnesses. Stunningly vivid and achingly intimate.