Zilkowski's Theorem by Karl Iagnemma

This is a story of integrity. John Henderson was past boyfriend to Marya. The new boyfriend is Miklos Czogloz. The interesting thing is that Miklos and John have been professors and intellectual friends/rivals for years. Miklos confronts John about Marya who has turned fanatically religious. This absolutely drives Miklos crazy. Also, John had written her thesis for her - thus allowing her to get a PhD --Now since she has turned religious she is feeling guilty. If she rats, it will affect both Miklos as well as John. Both men would probably be viewed as aiding her and lose their positions. You'll have to read this one to find out the ending...