Los Angeles County Sheriff’s Department investigators on Monday will announce that they have solved the 1976 slaying of Karen Klaas, a Hermosa Beach mother of two and the ex-wife of singer Bill Medley of The Righteous Brothers. The case was solved through the use of “familial DNA,” which identified the killer, the department said in a statement Friday. Detectives, forensic and law enforcement officers will hold a news conference on Monday, the 41st anniversary of the crime. Klaas, 32, was found in her Hermosa Beach home on Jan. 30, 1976. She had been sexually assaulted, choked and left unconscious. In...