Knock, Knock, Knockin’ Down “Kevin’s” Door City Paper Digi-Cam 2237 Linden Ave. The real estate listing spoke of great promise for the house at 2237 Linden Ave., a three-story attached single-family home with a garage and a nice-sized yard: “Vision, enthusiasm & dreams are great tools when looking at this property,” the Jan. 4 listing gamely read. “Reservoir Hill is the next Mecca for visionaries & trendsetters. Invest now & gain instant equity on settlement day.” The asking price: $135,000. Then the house fell down. And now, it seems, no one was responsible for it—especially Michael Mfume, the ex-con son...