Is it even possible to defend Serenity – this year’s most harshly pilloried film to date – without blowing its gargantuan twist right out of the water? Probably not, but let’s have an eager crack at it anyway. The pundits detest Stephen Knight’s latest creation but it’s actually pretty exceptional. Yes, it’s a somewhat sour-tasting bouillabaisse of ill-assorted ingredients. Yes, it’s disgustingly saccharine. And yes, it’s weirder than a smitten Tom Cruise. One to miss, though? Absolutely not.