"Primal Calling" is Barry Eisenberg's first published book. It is a nicely done study in human relations tucked into a tiny bit of International Intrigue. Jack Davies is a senior in high school and the son of Linda; a single mother. Linda has done well for herself in terms of making a living at the same time as making sure that Jack has a loving relationship at home. She is the owner of a successful business. She had an affair with a young man years ago and it did look like it would develop into a permanent relationship. Unfortunately, he was at the onset of a career that would take him all over the world with rapidly increasing responsibilities and the affair was allowed to stop, but not before Linda became pregnant with Jack. During Jack's growing years Linda made the decision to tell him that she was not aware of his father's identity and carry on by herself. One day pure chance led Jack to discover his birth certificate hidden in one of Linda's drawers. What immediately came to his mind was that his mother did know his father and kept it from him all these years. Jack slowly comes to the conclusion that he must find his father, but to avoid problems not tell his mother that he is searching for him. During the early part of his search Jack finds one of the schools his father attended and in trying to get information from them meets a girl who helps him. The two develop a friendship which continues after Jack goes on seeking more information. Cathy, the young lady becomes a friend to Jack and it certainly seems that they will go on to more permanent arrangements. Jack continues with his search until the day another car stops him on the road, frightening him a great deal. He is made to enter the other car. Then a strange thing happens. To calm Jack's fears he is told that he is being taken to meet his father. And that is exactly what happens. The remainder of the novel takes Jack, his mother, his father and Cathy into an adventure of discovery that does become very heartwarming with an ending that is well done and emotionally uplifting.