Date with the Zombie King

When Agent Zoe is betrayed during a zombie apocalypse by the fiancé she trusted and her own stepsister, she is left for dead among the infected. Just as the situation looks hopeless, a zombie steps in and rescues her, an act that makes no sense to a woman who has just learned that loyalty can be fatal. Zoe must now decide whether this unlikely protector is a threat or the only ally she has left in a world that has turned against her.