Its been almost a full year, butiZombieis finally returning to The CW on Tuesday for more brainy mysteries.

First, we met Vivian Stoll (Andrea Savage) in the season 2 finale.

Shes the head of Fillmore-Graves, a military contractor that employs all zombies, Thomas explains.

Heaven Just Got a Little Bit Smoother

Credit: Katie Yu/The CW

The Max Rager portion of the zombie universe is over.

The first two seasons had very similar shapes, he says.

Season 3 is going to have a much different shape.

We have no clearly defined big bad.

See Liv and co. figure it out wheniZombiepremieres Tuesday at 9 p.m.

ET on The CW.