there was no -- i don't even think we had any contact while we were in the jacuzzi other than when i was getting her out of the jacuzzi. >> reporter: but investigators were looking at christi's body and looking at signs of a struggle and more than one nasty blow to the head. so police had to believe which version, chris hall's or lindsay patterson's, was more likely the true story of what happened. tom dove is an investigator for the riverside d.a. >> i think they thought this was enough to say this was not an accidental drowning. it was purely much more suspicious than that. >> reporter: so before the night was over, chris hall was arrested and charged with the murder of his wife.