The Greystone Mansion was built in 1929 by oil tycoon David L. Williams, who gifted it to his son Ned and his family. The mansion was the most expensive home to be built in California at the time—it cost Williams four million dollars, which is the equivalent of 60 million dollars today.  Four months after moving in, Ned’s secretary Hugh Plunkett entered the house using his own set of keys. Moments later, Ned’s wife Lucy claimed to have found them both dead in the guest bedroom. The official story says that Plunkett was angry for not receiving a raise and shot Ned in a murder-suicide. But the unofficial story says that Plunkett was shot in the back. Some say that Plunkett and Williams were secretly romantically related, so the wife got rid of them both. After the murders, Lucy remarried and lived in the mansion until 1955. Ned’s evil spirit continues to live and haunt the mansion till today.