Easily the best Tennant Christmas Special. It's for sure one of those episodes which won't be for everyone and Donna and/or the Racnoss are definitely going to get on your nerves at least once here, but I think it's just nice? And cosy?

It just doesn't really take itself too seriously, which I think is a tone that just fits Christmas really well, but also has an underlining level of darkness to it, just to give it that lil extra bite. The Racnoss is also superbly realised and they're given good amounts of backstory to get you quickly invested.