The episode – apparently written by Steven Moffat – features a threat whose nature is one of those classic Doctor Who ideas that you’re surprised hasn’t been done yet.
“It’s the genius of Steven Moffat again. What exists in the Wi-Fi? We all need it…”
Although some fans have observed that the idea of a Wi-Fi inhabiting threat is similar to Mark Gatiss’ The Idiot’s Lantern, it’s not a million miles from another of his stories, The Unquiet Dead. There, universe-crossing aliens inhabited gas – the wireless networking technology of the 19th century, if you like.
What on earth could be hiding in the Wi-Fi? A monster? A digital death trap? An ethereal evil in the Ethernet?