This has all the failings of the bad episodes from Series 1. It's trying too hard to shout 'Look at us, we're the adult Doctor Who!' by throwing in alien blowjobs and pregnancies, and it just comes across a bit gross. It's very corny too; I mean, in one scene the alien shapeshifter poses as Rhys's mother and comes out with such laughably cliche'd lines like 'Rhys, you're a bad boy. And you know what bad boys get?'.

The best parts are the wedding itself. The alien shapeshifter plot is just cringe overload.