A wild ride as Ncuti Gatwa’s Doctor stepped out of the TV, leaving viewers believing anything could happenDoctor Who is not the only television programme that could have an episode revolving around a cartoon character being brought to life and escaping the screen, while also hitting beats about the loss of a spouse, the loss of a child and racial segregation laws in 1950s America, plus mind-bendingly meta fourth-wall breaks about the impact and future of the show itself, but there aren&rsq