Jury gets chance to hear Elizabeth Holmes' bold promises

In the recordings, Ms. Holmes boasted about partnerships with big pharmaceutical companies such as Pfizer that evidence in the trial has revealed didn't pan out

A jury weighing the fate of fallen Silicon Valley star Elizabeth Holmes got its first chance to listen to recordings of her boasting to investors about purported breakthroughs in a blood-testing technology on October 22.

The technology heralded as a quantum leap in blood testing, however, later dissolved into a scandal that now threatens to send her to prison.

The drama unfolded in a San Jose, California, courtroom with federal prosecutors playing a series of recordings from a December 2013 conference call that Holmes held with investors in Theranos, the company Ms. Holmes started in 2003 after dropping out of college at 19.