"Adam and Eve and Pinch Me" by Ruth Rendell

This book was a real slog for me and I seriously almost gave up on it. It was boring because it delved in intricate detail into the mind of an OCD schizophrenic. She was simple and her one time boyfriend was a serial womanizer and conman/thief who sent her a fake notice that he had died in a train crash. I suppose characters like the beautiful moronic wife of the serial womanizer, who bigamously married a gay MP so he could keep up a lie were ironically amusing.  Oh, and yes, the OCD schizophrenic was the murderer... She thought she was getting rid of the ghosts who were haunting her.