From Darkness

Sixteen-year-old Ari Wyndham lost her best friend in the sea. Everybody told her it was an accident, but Ari can’t forgive herself. Her own life is cut short when a tiger-snake delivers a deathly bite, and a beautiful, ghostly and strangely familiar young woman appears, summoning Ari's soul to the underworld. Ari, however, refuses to go.

Though she knows there will be a terrible price to pay for her transgression, the mysterious guide chooses to save Ari. Their rebellion upsets the balance ...