Billy Evans, Elizabeth Holmes' Partner, Launches Biotech Startup Amid Documentary Spotlight

Billy Evans, a 34-year-old heir to a San Diego hotel empire, has become a focal point of the documentary “You Can See Everything,” which follows his life with convicted fraudster Elizabeth Holmes. The film shows Evans managing daily routines, caring for their five-year-old son William and three-year-old daughter Invicta, and pursuing his own biotech venture.

Evans grew up in a wealthy family that founded Evans Hotels in the 1950s and attended the private Francis Parker School before earning an economics degree from MIT in 2015. Although he is not an employee or shareholder of the family hotels, he has worked at LinkedIn, Luminar Technologies, and launched a medical concierge service after graduation.

In 2022, Evans founded Haemanthus, a startup that aims to use laser technology to analyze biological samples more affordably. The company has raised several million dollars but has not yet released a commercial product. UC Irvine chemistry professor Eric Potma, who consults for Haemanthus, said the engineers are legitimate, though the technology faces significant challenges.

Since Holmes began serving an 11-year federal prison sentence in May 2023, Evans has been raising their children in Austin, Texas, and bringing them to visit her at the federal prison camp in Bryan. On a recent tech podcast, Evans described the difficulty of balancing business development, parenting, and efforts to secure Holmes' release.

“It’s hard because I’m building a business and I’m trying to free my wife from federal prison and I’m raising two kids,” Evans said.

Holmes, who has not legally married Evans, told People in a 2025 interview that their bond is “more than a piece of paper.” The couple became engaged in 2018 and have spoken publicly about their plans for a new diagnostic venture, with Evans stating, “The idea is to put the band back together and do it all again.”

Evans and Holmes agreed to participate in the documentary to offer “radical transparency,” but the film also depicts Evans attempting to limit uncomfortable topics and initially demanding a share of the documentary’s profits. He later waived the payment.

“We felt Billy was trying to exert a lot of control over the process, and it sort of caused our communication to break down a little bit,” director Nathan Fielder said after the film’s premiere.

After a private screening, tech entrepreneur Bryan Johnson praised the film and called Evans “magnanimous in conversation.” Evans thanked Johnson publicly, noting the support during a difficult period.

The documentary’s portrayal of Evans has sparked debate about his role in Holmes' life and his ambitions to revive diagnostic technologies reminiscent of Theranos.