tyler wasn't just a theranos employee. he was also the grandson of one of the company's most influential board members, george shultz, the formerh holmes. >> good morning. >> good morning. >> have you ever been deposed before? >> nope. >> okay. >> what tyler would reveal to carreyrou was ultimately the story he would tell under oath, in this deposition, years later. >> did you develop an impression of ms. holmes as a person? >> i was in love with her vision. i thought she was brilliant. >> did your impression of ms. holmes change from the time that you started at theranos through the present day? >> yes. >> how did it change? >> i felt like she was very manipulative. >> what do you mean by that? >> she's really good at telling you what you need to hear to keep going. she definitely did that a lot with my grandfather. she would just feed him things that were just completely factually not true. >> people can come in and do full service laboratory testing with a stick from the finger, as opposed to having tubes and tubes taken from your arms. >> can you recall any of the factually not true things that ms. holmes told you? >> the b