Ep 1. Door

In "Neverwhere" season 1 episode 1, entitled "Door," we are introduced to Richard Mayhew, a young businessman living in London who has his life turned upside down when he stops to help a bleeding girl on the street. This enigmatic girl, named Door, is of the utmost importance in the strange world that lies just beneath London's everyday streets, and by helping her, Richard becomes embroiled in a dangerous battle for survival.

In this episode, we are quickly thrust into the bizarre and fascinating world of London Below, a dark and dangerous place filled with strange creatures, mythical beings, and powerful magic. Door is an extremely compelling character, with her mysterious powers and her crucial role in the unfolding events. As Richard becomes more and more drawn into her world, we can feel his sense of confusion and disorientation growing, mirroring our own as viewers.

The episode is full of action and intrigue, with Door and Richard on the run from assassins and desperately searching for a way to stay alive and uncover the truth behind Door's circumstances. Along the way, they encounter a variety of fascinating characters, from the duplicitous and dangerous Mr. Croup and Mr. Vandemar to the enigmatic and powerful Marquis de Carabas. Each of these characters feels fully realized, with their own motivations and backstories that contribute to the richness of the world.

One of the major strengths of this episode is its world-building. London Below is a fully-realized and immersive place, with its own history, mythology, and architecture. The attention to detail is excellent, and there is a sense that there is more going on beneath the surface of every scene. The episode also does an excellent job of introducing us to the rules of the world; for example, we learn that certain types of magic can only be used in certain places, and that the great beasts of London Below cannot be harmed by regular weapons. These rules add depth and texture to the world, making it feel like a fully-formed and self-contained universe.

As the episode unfolds, we are constantly reminded of the danger and precariousness of Richard and Door's situation. The assassins hunting them are ruthless and effective, and it seems like they are always one step ahead. Similarly, the mysteries surrounding Door and her family are tantalizing, and we are left eager to learn more about her origins and her powers.

Overall, "Neverwhere" season 1 episode 1, "Door," is an excellent introduction to this strange and fascinating world. It is a thrilling and immersive start to the series, with strong characters, intricate world-building, and a sense of intrigue and mystery that keeps us hooked.