Is Chad Daybell a doomsday cult mastermind? Trial for the murder of Lori Vallow’s children and ex-wife begins

It’s a bizarre and tragic case of murder, unexplained deaths and apocalyptic cult beliefs about killing zombies – which played out in court for the first time when Lori Vallow stood trial. Now, her doomsday author husband Chad Daybell will face a jury. Is he the true mastermind behind it all? Andrea Cavallier and Rachel Sharp explain what to expect in the next chapter of the twisty saga