With space and time both neatly ticked off this week Doctor Who returns home for another present day adventure, and it's sure to be one that'll get certain fans' spines tingling. Arachnophobia sufferers beware, because there's Arachnids in the UK and in 2018 things are going to be looking a little more realistic than they did back in 1974's Planet of the Spiders. The fourth episode in series 11 was written by showrunner Chris Chibnall, and directed by Sallie Aprahamian.