It's a tantalizing mystery for lonely Betsy, who can't help doing a little investigating on her own. But Constable Evans has been involved with Sacred Grove before-looking for a missing American college student who was lured there by Druid worship. As Betsy does her own sleuthing on the spot, Evan comes to realize that there is nothing straightforward about this case and that Betsy has no idea at all of the terrible danger she is in.