Bad Blood

Secrets and Lies in a Silicon Valley Startup

by John Carreyrou

'I couldn’t put down this thriller . . . the perfect book to read by the fire this winter.' Bill Gates, '5 books I loved in 2018'

WINNER OF THE FINANCIAL TIMES/MCKINSEY BUSINESS BOOK OF THE YEAR AWARD 2018

The full inside story of the breathtaking rise and shocking collapse of Theranos, the multibillion-dollar biotech startup, by the prize-winning journalist who first broke the story and pursued it to the end, despite pressure from its charismatic CEO and threats by her lawyers.

In 2014, Theranos founder and CEO Elizabeth Holmes was widely seen as the female Steve Jobs: a brilliant Stanford dropout whose startup "unicorn" promised to revolutionize the medical industry with a machine that would make blood testing significantly faster and easier. Backed by investors such as Larry Ellison and Tim Draper, Theranos sold shares in a fundraising round that valued the company at more than $9 billion, putting Holmes's worth at an estimated $4.7 billion. There was just one problem: The technology didn't work.

In Bad Blood, John Carreyrou tells the riveting story of the biggest corporate fraud since Enron, a tale of ambition and hubris set amid the bold promises of Silicon Valley.

Now to be adapted into a film, with Jennifer Lawrence to star.

'Chilling . . . Reads like a West Coast version of All the President’s Men.' New York Times Book Review


  • Pan Macmillan; May 2018
  • ISBN: 9781509868094
  • Read online, or download in secure ePub format
  • Title: Bad Blood
  • Author: John Carreyrou
  • Imprint: Picador

In The Press

A dazzling story of deception in Silicon Valley . . . It is a tale of heroic cupidity on a scale that made the very best and the very brightest look like the very, very foolish . . . You will not be able to put this book down.


About The Author

John Carreyrou is a member of the Wall Street Journal’s investigative reporting team. He joined the Journal in 1999 and has been based in Brussels, Paris, and New York for the paper, winning two Pulitzer prizes.

John has covered a number of topics during his career, ranging from Islamist terrorism when he was on assignment in Europe to the pharmaceutical industry and the U.S. healthcare system. His reporting on corruption in the field of spine surgery led to long prison terms for a California hospital owner and a Michigan neurosurgeon. His reporting on Theranos, a blood-testing startup founded by Elizabeth Holmes, was recognized with a George Polk award, and is chronicled in his book Bad Blood: Secrets and Lies in Silicon Valley.

Born in New York and raised in Paris, he currently resides in Brooklyn with his wife and three children.