In Too Deep (Shenanigans, 5)

When Cody and Eric sneak onto the property of their local golf course at night, they uncover a life-size bronze statue in a murky pond. Despite mysterious phone calls warning them to stay away from the golf-course property, the best friends are determined to go back to steal the statue and figure out its origins. With the help of Eric's sister, Rachel, they begin unraveling clues that lead them to a long-forgotten crime. Perhaps the answers to this mystery should have been left in the depths!