Three years after allegedly killing her 2 kids, Lori Vallow will stand trial in a murder case that involved doomsday plots, "zombies," and fringe religious beliefs.

The new felony charges against Lori Vallow Daybell came late Monday, the latest twist in a case tied to the mysterious deaths of the couple’s former spouses and their beliefs about zombies and the apocalypse that may have affected their actions.

Police discovered the remains of 17-year-old Tylee Ryan and her 7-year-old brother, Joshua “JJ” Vallow, at a property belonging to their mother’s new husband.