Blood Brothers - Number 1 in series

Caleb Hawkins can never forget what happened in the woods twenty-one years ago. Every seven years, his home town succumbs to a terrible curse. Terrible, unspeakable crimes take place - a collective madness that has given Hawkins Hollow the reputation of a village possessed. It's this modern-day legend that draws reporter Quinn Black to the town. Caleb - a descendent of the town founders - has agreed to talk to her.
But the seventh year has come around once more, and both Caleb and Quinn have already seen the danger signs. Bound by fate, bound by passion, Quinn and Caleb must fight the coming darkness together...