My favorite movie from year 1989. In the Line of Duty IV is a 10/10 movie for me. If a movie can keep me focused for the full movie time, that's really great. It is really hard not to smile while watching In the Line of Duty IV. Whoever has not seen let it rush in front of the TV, because this movie just has to be seen. It's a movie for everyone, I'm sure you'll like it after watching.