Often prequel or Interim stories within the Rift Chronicles Universe.
Child of Sin
Devvon de Avonis has been on the run for as long as he can remember with his sister Sin as his only companion. But things have changed in recent years: Sin found herself a beau, had a kid, and they finally stopped running. But Devvon soon learns that the past they're running from has nothing on the present they've found.
An hour after her date failed to show up, Kora finally admits she's been stood up. But when a handsome stranger slides into the chair opposite her, pretending to be her missing date, she finds herself drawn into a world of mystery and adventure she'd never dreamed was possible - quite a feat considering she's part mermaid.
She's lived over a thousand lifetimes collecting and recording prophecies for her Master, but after a millennium of subservience, she is finally able to take her lives into her own hands.
New in town, Sorrel Quinn makes a name for herself by never backing down from a dare. So when she's challenged to rappel down into an off-limits cove to take a picture of the ghost ship that supposedly appears once a month during the full moon, Sorrel doesn't think twice about accepting. But then, she never expected to actually find a haunted ship. Or the ghost-boy living there.