Doctor at the Clinica Santa Maria Hospital in Puntarenas, Costa Rica, he trained at medical centers in London and Baltimore. He treated Tina Bowman after she was attacked by a Procompsognathus at a remote beach in the Cabo Blanco Biological Reserve.The treatment consisted of a plastic oxygen tent, steroids for breathing and the edema on her arm and antihistamines for her blood pressure. Dr. Cruz took photographs for reference, and also took three saliva samples from the bite wounds. One for analysis where he was, one was sent to labs in San José, and the third kept frozen in case it was needed. He took notice of how observant Tina was when she mentioned that he had on the same tie, but a different shirt than the day before. Though, he was unfamiliar with the “lizard” portrayed in her detailed sketch of the attacker. After the Bowmans had gone, Dr. Cruz decided to report his conversation with the family to Dr. Marty Guitierrez.