NBC’s Grimm this Friday drew 3.7 million total viewers and a 0.8 rating, adding a handful of eyeballs but down a tenth in the demo to a new series low. Opening the Peacock’s night, Undateable (2.9 mil/0.8) and Truth Be Told (2.3 mil/0.6) were steady in the demo while drawing their largest audiences since Oct. […]