Nightfall

The mysterious ex-Marine named Mason owes a life-debt to Jenna's father. Skilled and steadfast, he's ready for the prophesied Change, but Jenna proves tough to convince. Until the power grid collapses and mutant dogs attack-vicious things that reek of nature gone wrong.

When five strangers appear, desperate to escape the bloodthirsty packs, Jenna defies her protector and rescues them. As technology fails and the old world falls away, Jenna changes too, forever altered by supernatural forces. To fight for their future, she and Mason must learn to trust their instinctive passion-a flame that will see them through the bitter winter, the endless nights, and the violence of a new Dark Age.