OK, here was the family members at the murders:
Hinman- Bobby, Sadie (Susan), and Mary. Charlie and Bruce are claimed to have gone by.
Tate- Tex, Sadie, Linda K, Patricia (Katie). Some think Charlie went to scene afterwards.
LaBianca- First Charlie and Tex, then Sadie, Linda K, Katie and Leslie VH.
Shorty- Charlie, Clem (Grogan) and Bruce.
I find who went to be fascinating, especially to the LaBianca's because they had to know what happened the night before. Yes you... Leslie VanHouton.
The prosecution needed Linda K's testimony after Sadie recanted her confessions.
But if you look at it she KNEW people had been slaughtered at the Tate residence after she was only there to be the driver/lookout supposidly from the Bugliosi view. Then the next night she went to the LaBianca's home... not even used for driving. She would be bad as the rest IMO. I wonder if she was really in on the stabbings too. I think she knows alot more about the whole thing.