Ed Sanders gained access to every material witness to the Tate-LaBianca murders. He corresponded with Manson and visited the family many times in their quarters at the Spahn Ranch, and in Inyo County and Death Valley, their desert hideaways. He interviewed members of motorcycle gangs whose paths crossed that of Manson and his family. He covered the trial for the Los Angeles Free Press and developed close relationships with both the family's defense counsel and the detectives who investigated the murders.