Deadline: A check for $50,000 delivered by Justin Bieber can go a long way for a financially struggling family with a child with Down Syndrome Yes, but that, a belated quinceañera surprise and other acts of kindness and money from the Canadian superstar wasn’t enough to improve the fortunes of Knock Knock Live (0.5/2). The second week of the Ryan Seacrest hosted unscripted surprise show was even with the fast nationals of its debut and down 17% among adults 18-49 from its July 21 final numbers. Added up against everything else on TV last night, KKL was the lowest rated original of Tuesday’s primetime. Also telling is that the show saw an 11% decline in total viewers to just 1.56 million. Or to put it another way, Knock Knock Live was the second least watched show overall last night with 320,000 more viewers than a Flash repeat on The CW. Unlike its July 21 debut, which saw a So You Think You Can Dance 10th anniversary special as the lead-in, KKL had a new Are You Smarter Than A 5th Grader (0.6/3) preceding it. The Jeff Foxworthy hosted show was even with its last original of July 7.