On one night in October , 21-year-old Grace Jennings was found dead in a detached garage in Santa Fe — stabbed multiple times with a 3-foot sword, and with wounds described as “decapitation-like.  This is the chilling story of Kiara McCulley and Isaac Apodaca, the teenage couple accused of her murder. Police say a series of disturbing text messages reveals how Apodaca allegedly manipulated McCulley into carrying out the attack.. Em x