"I'm avoiding any activity that involves excitement...I've learned my lesson." After an adventure-filled June, all Kay Telfair wants is a quiet vacation in Maine with her family and best friend Anna-no drama, no stress. But the thirteen-year-old's hopes for a tranquil August stay in the village of Prospect Harbor soon fade when the girls compete for the attention of a young boy and Kay makes a startling discovery-a discovery that sends the three teens on a dangerous quest. Ignoring advice-and menacing threats from others-they continue their pursuit, drawing them deeper into a perilous mystery, deeper than Kay ever could have imagined.