I believe it's homicide. Many things make me suspect it is so and many members have already posted them - unexplained bruises on her forehead in four places, binding wrists and ankles, gagging, nautical knots, door message in third person...
But the one thing that I find highly suspect is that when Adam Shacknai texted Jonah Shacknai that Rebecca Zahau had hung herself, why did JS not call AS back to confirm, and why did JS not drive directly to his house to check on her status? :waitasec:
If someone called me to inform me that my significant other had killed themselves, the first thing I do is ascertain that this was not a joke and that they indeed are telling me the truth! Why didn't he do any of these things, and why did he allow LE to disrespect RZ's nude body? Appears that he did not care much for her at all...and/or he was very angry at RZ for his son's accident so much so that he did not give a hoot about RZ's death.