There's a smartphone app capable of crashing a commercial jet. And it's for sale to the highest bidder. Attorney Sasha McCandless is closing in on the prize: After eight years of long hours, she's about to make partner at a prestigious law firm. All she has to do is keep her head down and her billable hours up.Then a plane operated by her client slams into the side of a mountain, killing everyone aboard. She gears up for the inevitable civil lawsuits.But,...