The Angels had help from a psychologist to get a psychological profile of the murderer. The writers gave a hint as to who the suspect could be which was the restaurant owner. The owner tried to pin the murders on his pizza delivery boy, Freddie. However, the profile did not matchup with Freddie.
Kris does get an indication that it maybe the owner. She stays at the restaurant and witnessed the owner looking at his ex-wife going out with other men. His temper built up to a point that he attacks Kris. The Angels are not too far behind. They chase him on bicycles until the owner hits a car and flips over the hood. He looked at Kris and sees his ex-wife and says, "I still love you". Kris says, " I understand". I have studied psychology and understood the terminology being used by the psychologist. Early in the episode I was able to figure who was the murderer, but still it was entertaining to watch.