This is my absolute favorite suspense book for readers 9-12. Two boys are standing in the kitchen when the phone rings. One answers, and the voice on the other end confesses to having killed a woman and then shares that she is lying at his feet in a pool of blood. Alrighty then! Where do we go from here? Well, one of the boys will actually figure out who that voice belongs to...oh dear. The tension mounts. Fantastic thriller.