Jean-Luc Godard once said, "All you need for a movie is a gun and a girl". Aside from upping the ante to include a formidable arsenal of the former, Ruben Fleischer's Gangster Squad hangs its fedora on that wisdom. It might however have aimed a little higher, as its glamour-and-guns story is trimmed to the point of frustration. There's action aplenty but with a story told in quips and shorthand, this is the gangster movie as entertainment pure and simple.

“It’s like you’re a vampire,” whey-faced LA security guard Jacob is told. He gives a dawning, diffident look of recognition. Back in the cramped apartment he’s stopped leaving by day, he places a crucifix on his face, not quite expecting it to sizzle. For much of director Scott Leberecht’s atmospheric debut, he seems to be following Jacob’s progressive weakening by a rare disease with vampirism’s effects: blood-thirstiness, and enforced night-dwelling, ever since sunlight first blistered his skin aged 12. It takes us a while to realise the “vampire” description’s truth.

A dark night of the soul gets mined for maximum effect in Irish director Lenny Abrahamson's third film, a subdued yet infinitely disturbing portrait of a teenager, and by extension his community, undone by a sudden act of violence. Set among Dublin's comfortable Sandymount middle-class, the film couples an improvisatory vibe with a gathering sense of grief that brings Greek tragedy to mind. And when the movie's deliberately clamped-down feel cracks open, watch out: the howl it unleashes is terrifying to behold.

How could we have expected the London 2011 riots to be brought back for the big screen? The least likely answer must be as a black comedy about a bicycle cop who after a bad concussion has woken up as a one-man vigilante who’s taking out the villains on his beat, but asking their permission first. That last detail explains the title of Stuart Urban’s May I Kill U?, which brings this particular wayward member of her majesty’s constabulary rather into Carry On territory, with a twist of Ealing comedy on the side.

You will cry primal tears by the end of The Impossible, a family disaster drama by director Juan Antonio Bayona - because we can’t handle its overpowering truth. A delver of emotion, Bayona (The Orphanage) bases this spectacular drama on Sergio G Sánchez’s clear if sometimes curious script; the story itself comes from Maria Belon’s tale of the 2004 tsunami in Thailand.

Assured, warm and comfy, Dustin Hoffman’s directorial debut Quartet is a tasteful farce of froths and strops. Hoffman’s always wanted to direct and it’s not like he hasn’t tried.

"After such knowledge, what forgiveness?" TS Eliot’s line could well stand as an epitaph to Jacqui and David Morris’s troublingly thoughtful film about British photographer Don McCullin, whose haunting images of conflict across the world over half a century have defined our perception of modern warfare (though his range of subjects goes far beyond that).

“Knowing Clara Bow brought you down socially”. Although one of the biggest and most bankable film stars of the Twenties, luminous fan-favourite Clara Bow wasn’t so treasured by the Hollywood elite. She didn’t hide her affairs. She turned up for dinner in a swimsuit. Her father was an alcoholic and banned from sets. She revealed her deprived background to the press, undermining the myth that stars sprang fully formed from the Elysian Fields. When it came to assessing the silent era in his seminal book The Parade's Gone By, film historian Kevin Brownlow didn’t mention her.

“It’s always the quiet places where the mad shit happens,” observes Garda Lisa Nolan (Ruth Bradley) in Northern Irish director Jon Wright’s creature feature. And, credit where it’s due, the mirthfully monikered Grabbers presents us with some classically mad shit. Set on the fictional Erin Island - a fishing village off the coast of Ireland - Grabbers is Wright’s second feature after 2009’s Tormented.

If 2012 is to have a cinematic legacy, it may just be remembered as the year big-screen time travel came of age. While Rian Johnson’s pulpy noir Looper explored the moral and spiritual implications of a world in which decade-hopping has become the norm, first-time director Colin Trevorrow hones in on the concept’s core emotion. Our universal longing to go back, to recover, to alter the past, is both what makes time travel such an enduringly popular trope, and what sustains Trevorrow’s particular offbeat, quietly joyous take.