NBC’s Grimm this Friday rebounded from its Week 2 downturn, drawing 4.9 million total viewers and a 1.3 rating, up 9 and 18 percent. Leading out of that, Constantine (3.1 mil/1.0) ticked up one tenth. Over on CBS, Amazing Race (6.1 mil/1.2) added some eyeballs and a tenth in the demo, Hawaii Five-0‘s 100th episode […]