10 Most Unexpectedly Depressing Movies

Edgar Wright's conclusion to his Three Flavours Cornetto trilogy - following up Shaun of the Dead and Hot Fuzz - certainly wasn't a total dirge, but it was a far more serious-minded, even sober character piece than anybody surely expected.

Superficially, The World's End is about a group of five friends reuniting 20-something years later to complete an epic pub crawl while dealing with an alien invasion.

But really, it's a film about the destructive power of addiction, with protagonist Gary King (Simon Pegg) shown to be a down-and-out alcoholic from the jump - a man living for his next pint, or more specifically, his next twelve.

Beyond this, we later learn the grim full extent of Gary's spiraling mental health, including a recent suicide attempt, and that completing this pub crawl has become his single-minded obsession, even with aliens threatening humanity's existence.

Even though The World's End concludes with Gary newly sober, Pegg has made it clear in interviews that the story was inspired by his own struggles with alcoholism, lending the film an even greater sense of realness compared to the sillier, more heightened stylings of the trilogy's two prior entries.