Nicky Cruz's heart had turned to stone when he was only three. His mother nicknamed him the "son of Satan," and he was severely abused, both physically and mentally. After moving from Puerto Rico to New York, Nicky became the leader of a notorious street gang — the Mau Maus. He turned into a violent street criminal before he was eighteen.

David Wilkerson, a skinny preacher from Pennsylvania, reached out to him with relentless love. He said, "Nicky, Jesus loves you," and this simple message opened the door to a new life for Nicky Cruz. Run Baby Run, now a classic that has sold over 12 million people, tells his exciting story with gripping openness.