By John Keegan and Edmund Boys
“Person of Interest” has had a busy season. It's had to juggle many things: victims, perps, cops, feds, shadowy spooks, criminal masterminds. So, it's no surprise they might need a breather, a chance to relax and let their hair down. Courtesy of an enterprising drug dealer, that's just what they get, along with an indelible image we never knew we needed to see until now: Finch on Ecstasy.