The trial of former Theranos executive Elizabeth Holmes, set to begin Aug. 31, is sure to highlight a sore point in the history of Boies Schiller Flexner and its founder David Boies.

Boies’ representation of Holmes, and the optics surrounding the spectacular collapse of the company in 2018, was a contributing factor in the cascade of departures the law firm experienced in 2020, according to several former partners at the firm—even as some in and outside of the firm say Boies did nothing wrong throughout the episode.