Sundance: Documentary dives deep into the fraud of Theranos

PARK CITY, Utah (AP) — Oscar-winning filmmaker Alex Gibney has premiered his latest documentary on the fraudulent tech startup Theranos at the Sundance Film Festival Thursday night.

“The Inventor: Out for Blood In Silicon Valley” is among a handful of films that kicked off the annual independent festival. It looks at the rise and fall of the blood-testing company and its founder Elizabeth Holmes.

Gibney says the most difficult thing about making the film was that at first nobody would talk to them. But a breakthrough came later in the process when someone inside the company sent a motherlode of never-before-seen footage.

“The Inventor” will air on HBO later this year.