File:613-BTS64.jpg

Summary
BTS image courtesy of Key Grip Bruce Lawson on Instagram; image source: https://www.instagram.com/p/BSPanMvDJSCisELpKKfyo0WiQzSNroZcTzWTtI0/

Bruce Lawson describes this picture being taken moments before David Giuntoli filmed his last shot of the series.