Murder by Mail

Someone is sending vicious hate mail to Paula and Lawrence, fellow campus cops and goods friends of Peggy O'Neill. The anonymous letters attack the couple's interracial and punctuate the writer's fanatical judgment with passages from the Bible. Peggy has her suspicions about the identity of the bigot, yet without any crime committed, there is little she can do.
But then a grad student turns up dead in his car and an old man is burned to death in his house. Paula becomes a suspect and Peggy has a hunch the deaths may be linked to the hate mail. With her usual persistence, she looks for proof-and is soon on her way to uncovering the most dangerous and insidious scandal ever to hit the campus.