Complex sentence: Radford's search for the first eyewitness report of the chupacabra leads him to interview Madelyne Tolentino of Canovanas, Puerto Rico, from whom the first descriptive account of the creature came shortly after the epidemic of animal predation reports.
Split into simpler sentences: Radford's search for the first eyewitness report of the chupacabra leads him to interview Madelyne Tolentino of Canovanas, Puerto Rico. She had the first descriptive account of the creature shortly after an epidemic of animal predation reports.