staking out his daughter's house. >> one night there were some harleys that drove up. they knew exactly where they were going. they drove right up to the gate and they started climbing the gate. by then owner had guard dogs. the guard dogs came around and that was the only thing that stopped them. and shaerp's dad just thought, you know, there is something here. they were too cocky, they knew exactly where they were going. something's wrong. so he followed them to spawn's movie ranch. >> right to manson's door step. tate notified the detectives about the suspicious bikers at the ranch but the lapd did nothing. it turns out another police department was already there, watching manson's every move. but they suspected him of auto theft. not murder. >> when the police swooped in a week after the murders, charlie thought, this was it. somehow they have figured it out. and the police couldn't understand when charlie asked