At this point in the narrative, Carreyrou begins by describing the hiring of Chelsea Burkett, Elizabeth's best friend, at Theranos as a member of the client solutions group to help validate studies done by the company. There, Chelsea goes on to meet Ramesh Sunny Balwani, who was Elizabeth's older boyfriend and also the executive vice chairman of Theranos. She describes him as being the kind of boss no one liked, but someone that Elizabeth could not fire due to her personal dependency on his previous mentorship and her idolization of him. During the time she worked for Theranos, Chelsea traveled several times with Sunny in Europe and Mexico in order to test the prototype which was named Edison. Unsurprisingly, the device failed to send accurate results but Sunny explained that the problem was the internet connection. Soon, Chelsea started feeling like everything might be not as great as she thought it was and after Elizabeth invited an old common friend who was diagnosed with cancer to test his blood with the device in order to be able to choose a treatment, she decided it was time to leave. She could understand that the company was trying to do tests for different epidemics such as the swine flu. However, Elizabeth and Theranos’ demeanor in acting like the device was more important or more accurate than a doctor’s opinion raised several red flags for her in connection with device’s failure during the her travels.