New Manson clues revealed in tapes between Charles “Tex” Watson and his attorneys could provide information on unsolved Manson family killings.

Recordings of conversations between Charles Watson and his attorneys are being scrutinized by the LAPD for possible new Manson clues. Detectives believe the contents may tie the murderous cult to additional killings.

Los Angeles Police Department detectives fought for years to get access on decades-old tapes made by Watson’s legal defense team. But a recent ruling by a federal judge in Texas found that Watson waived his right to attorney-client privilege when he allowed his lawyer to sell the recordings to a writer for a book on Watson’s life nearly 40 years ago. The recordings were private until September 1976 when Watson authorized their sale to author Chaplain Ray Hoekstra to help cover legal fees. In the recordings Boyd tells the author that his client was not implicated in any of these crimes.

Detective David Holmes said the Robbery-Homicide Division and the Los Angeles County district attorney's office have been analyzing the tapes for a couple of weeks.

Cmdr. Andrew Smith said the Robbery-Homicide Division and Los Angeles County prosecutors believe the eight 40-year-old cassette tapes could shed light on other cases that may have been connected to Charles Manson’s late 60s killing spree.

Convicted murderer Charles Watson had 20 hours of conversations with his Billy Boyd, his lawyer, with at his Texas law firm. Boyd, who died in 2009, fought against the release of the tapes because he contended that it would be a “public dishonor” to those affected by Sharon Tate killings. The tapes were converted to electronic audio files.

Watson is currently serving a life sentence for his part in the murders of actress Sharon Tate Polanski, Abigail Ann Folger, Wojciech Frykowski, Thomas Jay Sebring and Steven Earl Parent in 1969. Watson was originally sentenced to death for killing but California suspended the death penalty in 1972.

Watson has said in the past the Manson family wasn't responsible for any other killings, but Boyd reportedly said that Manson had told his client that he killed “a bunch of other people” on the recordings that resurfaced in February. The tapes were found last year by a trustee handling a Chapter 7 bankruptcy case.

Charles Watson allegedly told his lawyer that Manson said he had murdered many more people.

Charles Manson, now 77, remains in prison despite multiple attempts at parole. Manson is imprisoned at Corcoran State Prison in Kings County, California. The man who orchestrated the brutal “Helter Skelter” killing, named for a Beatles song, is not eligible for parole until he is 92.