Missouri man set to be executed for 1998 triple murder

Mark Christeson, 37, was sent to death row for the murders of Susan Brouk, her 12-year-old daughter, Adrian, and 9-year-old son, Kyle.The U.S. Supreme Court temporarily halted the execution in 2014 after Christeson's legal team argued his previous attorneys had failed to meet a key deadline for filing court papers in 2005 and had refused to cooperate when the mistake came to light.In January 2015, the nation's highest court threw out an appeals court ruling denying Christeson another chance for