Jena Malone fan, actually, having loved her in Donnie Darko, and liked her in the GMO-themed horror film Corn and in this; she's also got a very quirky musical career going, and seems like an interesting, talented young woman. But The Ruins is interesting horror fare regardless of her contribution. Despite seeming to be a globalized variant on the urban-rural horror film - four American tourists in Mexico, and one German, encounter great danger in the jungle and have to fight for their survival - what The Ruins (the film) really seems to me to be about is gender roles - how women and men are expected to behave in certain situations, particularly when facing a crisis. We see the men through the women's eyes, and the women through the men's, and have cause to mistrust both; audience members are invited to feel this mistrust and to interrogate and/or overcome their own prejudices, and sort out their own values, based on the sort of gut-level, pre-conscious punch in the viscera that good horror can so well-deliver. Some belief needs to be suspended along the way, since certain aspects of the premise don't bear deep investigation, but the premise is not to be mistaken for the point of the affair. It's a film that bears some thinking - though the ending may be more pleasing for male viewers than females; it's not without its own biases.