After Cassie Hack was the lone survivor of the killing spree of a slasher nicknamed "The Lunch Lady" - who was also Cassie's mother - she committed her life to hunting down killers and supernatural evil. She thought she left that life behind, but in HACK/SLASH: SON OF SAMHAIN, she's drawn back into the slasher-fighting life when a cult of monsters plot to unleash an ancient evil on the world. With the help of a new partner, Cassie must confront a darkness like she's never encountered before - and the darkness in her own life.