Jake & Melissa's Pre-'Prisoners' Collaboration

Jake Gyllenhaal and Melissa Leo will both have their names in countless Year-End Best Of conversations thanks to the pair of powerful performances they deliver in Prisoners -- but it turns out this isn't the first time the two have shared the screen.

VIDEO - Jake & Jackman Joke Around on Prisoners Carpet

During a Q&A for The Los Angeles Times' The Envelope Screening Series, in association with EPIX, Leo said, "You know where Jake really learned to be such a good detective? When he was 7 years old, he was on Homicide and I was playing the homicide detective!"

"I was watching her like a hawk," Gyllenhaal laughs. "And everything that Loki is is based on all the work I watched Melissa do in the three days I worked with her when I was 7 years old."

Check out ETonline's exclusive clip to hear the co-stars elaborate on their working relationship and the ethical dilemma Prisoners revolves around!

For more on The Los Angeles Times' The Envelope Screening Series, in association with EPIX, click here!