You might remember that Mrs. Lockyer was involved in an incident at a hotel in Newark that got violent and involved her and a male acquaintance. You might also remember that Mrs. Lockyer is the wife of the state Treasurer and a member of the Alameda County Board of Supervisors. The man involved in the situation has a history of drug arrests.
It appears that the male friend has a tape of himself and Mrs. Lockyer engaged in sexual activity. He has sent a copy of tape to Bill Lockyer and threatened to make its contents public. Bill Lockyer states that the man is a former boyfriend of his wife and has been stalking her. The Alameda County D.A., who is a personal friend of Lockyer, has looked into the matter and declined to act. It is their opinion that Mrs. Lockyer has been engaging in a consensual, ongoing relationship with the man, based on emails and sexually explicit photographs on her computer.
It is so far unclear as to why the boyfriend would have sent a copy of the tape to Lockyer. There does not appear to be any direct blackmail going on, according to the D.A.
Clicking here will link to a pretty good SFGATE piece on this story.