Jack Webb left Pat Novak in San Francisco to go to Hollywood, and Mutual hoped he could bring the magic to a similar character by the name of Johnny Madero. Mutual's remake of Madero prompted legal threats of ABC. So some facts were changed. Wise drunk Jocko Madigan of Pat Novak was replaced by a waterfront priest named Father Leahy. Other than that and a change to the opening, it's hard to tell the difference between the two shows, except Webb amped up the similies from Pat Novak.