I'll be frank, I don't get the hype for this one. Yes, Four and Sarah are a great team, but the plotline on this one really is a lot of back-and-forthing around a country estate while people get crushed to death between mummy chests. The first three episodes feel padded, and the fourth feels like they dumped a bunch of children's logic puzzles in to fill the time -- often without giving the necessary time or information for children watching to solve (seriously, what was with the measuring in scarf-stitches?). Some good scenes scattered throughout, but largely failed to hold my attention. Eminently skippable.