Eccleston, Shepherd, Teixeira and Torrens are all excellent in this tightly crafted one-off. Won't spoil the villain, but he's wonderful and the icy sound design that follows him is chilling. There's a good running gag that involves Eccleston flirting with a highly personalized AI and when his running joke to Teixeira's character doesn't land, it takes us from fun romp to serious adventure with stakes. Again, won't spoil it, but I also appreciate the way anxiety was handled in this story.