And, 15 years ago, in Matt Smith’s first triumphant season of Doctor Who, one episode dared to go back to the Jon Pertwee-ish formula from the 1970s, with a twist. Today, the first season of Steven Moffat’s tenure as showrunner of Doctor Who is sometimes regarded as a golden age. But, on June 12, 2010, we were still in the middle of it, and on some level, the Matt Smith era was still convincing us that we could live without David Tennant. Written by controversial scribe Gareth Roberts, the strength of “The Lodger” isn’t so much in the set-up, but rather, how Matt Smith plays it. “The Lodger” might not be the best Matt Smith Doctor Who episode of all time, but it was certainly a pivotal one.