Death on the Bridge

Three months ago, Cambree Nguyen drove to a remote bridge in Montana and jumped from a height of two hundred feet, dying on impact. At least, that's the official version from the police. But her twin sister Lena doesn't believe it. She drove to that very bridge in her deceased twin's car, armed with a cassette tape recorder, to find out what really happened by questioning the highway patrolman who discovered her sister's body. Corporal Raymond Rizevik agreed to meet Lena at the scene, but not everything adds up in his account. Why did Cambree make sixteen attempts to call 911 shortly before her death? Why did she send a mysterious message to her sister? Lena is willing to do anything to uncover the truth.