Minny times non-Catholics will ask why the Catholic version of the Bible has 7 more books than Protestant Bibles do? That's a good question, and here's a short video to address that topic.
If you're looking for a more in-depth answer, here's a longer audio recording that you can listen to by the Author of the book Why are Catholic Bibles Bigger. It's a recording of a call in show on the topic, so it's about an hour long.