Choose Your Own Adventure 28: Island Of Time - R. A. Montgomery

A spur-of-the-moment trip to Providence Island turns into a voyage back in time. Do you turn back your boat when a dangerous storm starts brewing, or try to make it to harbor? Do you follow a mysterious ethereal voice you hear in the forest? What if you get stuck in a weird time loop? And what is your parents' accountant doing in the family lake house?