Like Perry Mason, this series wasn't an original, it was based on a (still ongoing) series of books by Ralph McInerny. Unlike Perry Mason, though, the producers took almost nothing from the books but the characters of Fr. Dowling and Mrs. Murkin, and of those two only Mrs. Murkin bears any resemblance to the character in the book. I'd advise anyone who likes mysteries but was disappointed in Fr. Dowling on TV to read the books, they are excellent.