Elizabeth Holmes (Herself), Tyler Shultz (Self - Research Engineer), Errol Morris (Himself), Roger Parloff (Self - Fortune), Alex Gibney (Self - Interviewer), Dan Ariely (Self - Behavioral Economist), Ken Auletta (Self - The New Yorker), Erika Cheung (Self - Lab Associate), Cheryl Gafner (Self - Receptionist), Dave Philippide (Self), Douglas Matje (Self - Biochemist), John Carreyrou (Himself), Dave Philippides (Self), David Boies (Himself), Ryan Wistort (Self - Research & Development), Tony Nugent (Self - Vice President, Product Development), Phyllis Gardner (Self - Professor of Medicine, Stanford University), Channing Robertson (Self - Theranos Advisor), Don Lucas (Self - Investor), Tim Draper (Himself), Ramesh Balwani (Himself), Rochelle Gibbons (Self - Wife of Ian Gibbons)