reporter lemore abrams with how they unfoiled the plot. >> and you don't think it's going to happen toyour child, and when it becomes this real, it -- it hits a part of your heart that you've never wanted to be touched. >> c.r.i.t. inwilson is both a -- chris tin wilson is -- krish -- kristin wilson is both a teacher and a mom. >> authorities say not just her daughter, but a /hreults of students and staff at summerville high school would have been -- list of students and staff at summerville high school would have been vics -- victims. >> included names, locations, speak and methods in which the plot was to be carried out. >> four teen boys arrested before they could carry out a detailed attack against specific people on a scheduled day. >> that they were going to come on campus and shoot and kill as many people as possible at the campus. >> a disturbing plot investigators say the suspects confessed to. >> they were in the process of trying to obtain these weapons. >> tuolumne county sheriff says a few brave students came forward after learning about suspicious activity and hearing tal