I have two crazy theories. Number one: Neil did actually kill his wife back where she drowned, but he didn't kill Lisa because obviously it's Buell the mailman! What else is he needed for in every shoot! He is a creep who is in love with Anna with maybe some mommy issues? He killed her, then because he love Anna when she fall he went outside and hold her to her home.
Number two: Neil did kill both his wife and girlfriend (Lisa) and Anna actually saw that and when she went outside it was raining so she fainted, but who helped her? Buell the creep! He lives in her attic and have some sick one side relationship with her but he couldn't say anything because well he shouldn't be there at that time.
Number two: Neil did kill both his wife and girlfriend (Lisa) and Anna actually saw that and when she went outside it was raining so she fainted, but who helped her? Buell the creep! He lives in her attic and have some sick one side relationship with her but he couldn't say anything because well he shouldn't be there at that time.