"Bones" (8 p.m., Fox): Ready to dig up more "Bones"? The offbeat crime series returns for its second

"Bones" (8 p.m., Fox): Ready to dig up more "Bones"? The offbeat crime series returns for its second season with an episode that has Brennan and Booth investigating the site of a train accident where the bodies of a senator and a high-profile businessman have been found in the wreckage. But here's the real mystery: Will these two hook up this season?
"20/20 Special: Last Days On Earth" (9 p.m., ABC): Disease. Global warming. Nuclear war. An asteroid strike. A volcano. These are among the seven doomsday scenarios scientists say could bring down civilization. Experts say humans have the power to control their destiny and determine the fate of the planet -- by learning how to diminish the threats of these grim possibilities.
"Justice" (9 p.m., Fox): L.A. attorney Ron Trott runs a pricey, sophisticated, high-tech law firm that uses every tool and technique within reach to defend its high-profile clients. Trott (Victor Garber) has a gift for manipulating the media, and he surrounds himself with a team (played by Kerr Smith, Eamonn Walker and Rebecca Mader) whose members each have their particular specialty. It may not add up to justice, but it often adds up to a verdict of not guilty, and that's the objective. "Justice" premieres tonight.
"30 Days" (10 p.m., FX): Filmmaker Morgan Spurlock decides to go to prison for a few weeks.