The Girl in The Woods by Patricia MacDonald
I have to tell you something . . . I did something bad.
Ever since her best friend Molly was murdered fifteen years before, Blair Butler has returned to her small hometown in the Pocono mountains as seldom as possible. Now she has been summoned home to see her terminally ill sister one last time - only for Celeste to make a shocking deathbed confession. Is it really true that the wrong man has spent fifteen years in jail for a crime he didn't commit? Having promised her dying sister that she would do her best to right the wrongs of the past, Blair sets out to discover what really happened that cold, wet November night fifteen years before: the night Molly's battered body was found in the woods behind her home. But is Blair prepared for the shocking truth . . .?