I like that they brought back the spider guy from the only good Series 11 episode, and that Captain Jack is back and finally interacting with 13. I don't think using a Dalek as an inspiration for a security drone is as bad as this episode makes it out to be (although I guess the guy cloning a Dalek is bad), plus I feel the Doctor Jail scenes lack something. "Four minutes to Osaka"? Why? It's a machine that can travel in space and time and it takes them FOUR MINUTES to go from London to Osaka? How long does it take for them to go to the future? or another planet?