Looking at photos of the Lofgrens, it's hard to imagine a more perfect family. Which only makes the cruelty of their fate that much more heart-wrenching. All four died in 2008 of carbon monoxide poisoning in an Aspen rental home. Now, their kin have filed a civil suit against Pitkin County and others over these horrific deaths; it documents the awful circumstances. Get details below -- and see a photo gallery of Lofgren photos that bring the tragedy home.