Crescent Island, a charming, New English vacation refuge, is where Sandy Jenson has lived her entire life. As the owner of the one-stop shop, Wave Haven, Sandy sees and hears it all on the island. The locals and tourists, alike, can't help but flock to her beachside business to grab knick-knacks, beach snacks and even just a little bit of gossip. When Maynard, a young islander, ends up dead the morning after visiting Wave Haven with his girlfriend, Sarah, rumors immediately begin to fly. When Sarah seeks out Sandy for support in the wake of her boyfriend's death, Sandy begins her own, quiet investigation in an attempt to learn more about the homicide.

Problems begin to arise when the mayor, Sarah's father, becomes the prime suspect on Sandy's list - a lead the island's sheriff, Mike Hayward, disagrees with. He has a running list of his own, including Sandy's beau Archer and even her aging, fatherly friend Fred, who saved her life as a young girl. As secrets begin to make their way to the surface, Sandy must navigate the web of speculation and follow her gut to uncover the truth.