One of the things you realise when you sit down and actually rank all 23 MCU films is how few duds there are. Kevin Feige and colleagues have done a remarkable job of turning out pretty solid seven out of ten pictures, and there are few genuinely bad entries in the series. But this is one of them. The Dark World was beset by problems with the start, with rewrites and changes of director, and the plot – featuring Dark Elves, frost monsters, and a malicious substance called the Aether – all feels a bit distant. It’s the lowest rated MCU film on IMDB.