Susannah Cahalan is the #1 New York Times bestselling author of Brain on Fire, which has sold over a million copies and has been translated into more than twenty languages. Her second book, The Great Pretender, was shortlisted for the Royal Society's 2020 Science Book Prize. Her third book, The Acid Queen, a biography of Rosemary Woodruff Leary, a hidden voice of the American counterculture movement, was published by Viking in 2025. She has written for The New York Times, Vogue, Rolling Stone, AirMail, Oprah Magazine, and The New York Post, where she worked as a cub reporter. She lives in Rhode Island with her family.