He has contributed to the TV series 60 Minutes II and Court TV. Halperin has authored the books Celine Dion: Behind The Fairytale – A Very, Very, Unauthorized Biography, Who Killed Kurt Cobain? The Mysterious Death of an Icon, Shut Up and Smile: Supermodels, the Dark Side, Fire and Rain: The James Taylor Story, Best Ceos: How the Wild, Wild Web Was Won, Bad and Beautiful: Inside the Dazzling And Deadly World of Supermodels, Miss Supermodel America, Love & Death: The Murder of Kurt Cobain, Hollywood Undercover: Revealing the Sordid Secrets of Tinseltown, Brangelina: The Untold Story of Brad Pitt and Angelina Jolie, and The Governator: From Music Beach to His Quest For the White House, the Impossible Rise of Arnold Schwarzenegger.