Arthur Schrimer was convicted of killing his second wife. He hit her in the head at home, then staged it to look like a car crash as he was taking her to the hospital for "jaw" pain. Nobody thought anything of it until a few weeks later when a man committed suicide in the church office after he found out his wife (the church secretary) was having an affair with the pastor. Coincidentally, his first wife fell down the stairs and died. He's due to stand trial in her death too.
http://lancasteronline.com/article/l...2nd-wife-.html