wecht performed a second autopsy. his conclusion? homicide. was rebecca murdered?s man. >> it was intriguing from the beginning. >> reporter: san diego attorney keith greer. >> dr. wecht did identify deep bruising and internal bleeding, which couldn't be explained by the hanging. >> wait one second, but could be explained by what? >> somebody knocking her down from behind, and hog-tieing her. a struggle. >> reporter: plus the force of falling nine feet from the balcony should have caused more severe injuries to rebecca's neck. greer, like dr. wecht, believed someone killed rebecca and placed her body at the end of the rope. and he began to develop a theory as to who. >> the writing on the door is the key to the case. >> reporter: remember the message painted on the door? investigators initially declined to reveal what it said. greer eventually found out. the message scrawled in black acrylic paint read, she saved him, can you save her? greer believed the message was not written by rebecca, it was written about her. >> she saved max. at the time you have to look at