Doctor Who Magazine Winter Special #1981

In the frozen isolation of Skywatch-7, U.N.I.T. soldiers brace for a potential meteorite impact—only to find one of their own returning from the outpost's perimeter, moving with unsettling precision. As the team tries to assess the situation, a chilling realization sets in: the man who came back is not who he claims to be. The air grows tense as suspicion spreads, and the line between ally and imposter begins to blur.