“The Knock Knock Man” (**1/2 out of four) was a better-than-average horror show about a group of friends (Ty Bialik, Kamryn Emory, Callie Grayson, and others) who summon the title urban legend as a dare but are startled and terrified when he actually comes to life and starts killing them all one-by-one. Never transcends the horror-movie origins of “Candyman” which it was obviously inspired by but is solidly done B-material with stylish direction and some inventively gory kills. Overall a “knock” worth answering and MUCH better than most of its ilk.