. >> 32-year-old rebecca zahau appeared to have it all a rich boyfriend in a fairy tale life in a southernecca walks in a room everybody remembers her. >> until it all ended. >> 32-year-old rebecca zahau found bound and hanging from a balcony. >> i said, my girlfriend whom i loved is dead. >> bizarre include clues left behind. >> like a riddle. >> intricate knots in the rope. blood on the door. and knife with blood on it. ininvestigators call it suicide but her family says -- >> -- she was murdered. >> and the only other person on the property her boyfriend's brother. >> did you yourself do anything to her that resulted in her death? >> no. >> let's see if you can do it. >> we've been investigating this story. experts taking us through the theories of. >> she would have had to hop, hop, would have to throw yourself over, head first. >> i'm not completely satisfied this was a suicide. >> the mystery surrounding rebecca zahau's death dates back to july 2011. she was at her boyfriend's jonah shacknai's house with her young sister zena and shacknai's son max. sister and his six-year-old son ma

civil jury found adam schacknal responsible for the mysterious death at his brother's mansion of rebecca zahau. the jury ordered him to pay her family more than $5 million. >>> the "chicago tribune" reports a man caught on video saving another man from a burning car says the whole thing was a little crazy indeed. this police dash cam video captured the scene. this was on saturday in aurora, illinois. one man pulled the injured driver from the burning car, while another man pulled him further away from the flames. police are calling the two men heroes. the driver burned in the fire is actually charged with drunken driving. >>> still ahead, raising the roof. surveillance video captures high winds at a school cafeteria building. of. surveillance video captures high winds at a school cafeteria building. first, we head to vermont. and go to our coffee shop. and meet dave. hey. why is dark magic so spell-bindingly good, he asks? let me show you. let's go. so we climb. hike. see a bear. woah. reach the top. dave says dark magic is a bold blend of coffee with rich flavors of uganda, sumatra, colombia

speck of evidence that in any way showed that adam had absolutely anything to do with the death of rebecca zahau>> that's hard to believe. he was the only adult there. he was the one who found the body, he allegedly caught her off the rope, tried to give her cpr. >> rick: it had a motive potentially because he was angry about the angry not taking care of the 6-year-old and allowing him to fall down the stairs. because that would be a motive, but the other thing that i think is problematic with this case is that because he claimed that he is the one who cut her down, his dna is going to be all over her anyway. so we don't know whether his dna got there because he was killing their and then made it look like. >> another lawyer said she may have been sexually assaulted. and to the point earlier, where is that dna at this point? the body is decomposed, was a rape kit ever taken, we just don't know. >> rick: because of that apparent lack of forensic evidence, that would make the possibility of criminal charges less likely. >> i think at this point, it would make it almost impossible. >> unless somebo

this sprawling beachside mansion of her pharmaceutical tycoon boyfriend, jonah shacknai. >> was rebecca zahaueath by adam shacknai's conduct, yes. >> reporter: a jury finding this man, her boyfriend's brother adam shacknai, responsible for her death awarding her family $5 million in damages. >> hopefully people will know that she didn't commit suicide. >> reporter: adam shacknai, a tugboat captain from tennessee was visiting his brother at the time of rebecca's death because of another tragic mystery which occurred inside the beachside mansion. his brother's 6-year-old son max plunged over a second floor railing and was hospitalized. he later died. rebecca was the only adult home at the time. days later adam found rebecca's lifeless body bound and gagged and cut her down and called 911. >> 911 emergency, what are you reporting? >> yeah, i got a girl hung herself. >> okay. is she still alive? >> i don't think so. >> reporter: the case was eventually ruled a suicide but rebecca's family never buying it suing adam shacknai in civil court. adam's brother jonah defending his innocence in an exclus