Originally Posted by DieselDiner
Suicide. That explains the (hidden) reason for the writers revisiting the topic with the daughter on the farm.
it's a stretch, but i'll bite the hook
they would've had to do something like cyanide pills, because they had no injuries to their bodies (like a self inflicted GSW, Noose, broken bones from jumping..)
They are supposed to reveal what the scientist told Rick this season, according to the interwebz.
I just noticed the Car/Hose comment you added - I totally missed that, im going to check my DVR and watch it again tonight. because that right there would be a great observation