Presumably, you only went along to the first Night at the Museum to keep the kids quiet for a couple of hours, but you might have found yourself pleasantly surprised. Not so this sequel, with its muddled plot, tired-looking effects and idiotic slapstick humour. Amy Adams, as a gleeful Amelia Earhart, and Hank Azaria, as an evil pharaoh, provide brief moments of entertainment. But they’re not enough to save this shameless commercial cash-in from languishing in the sequel bad place.