>> i can tell you this, if there was anybody else involved with the murder of philip and carey heidt,ears since the terrible events on springfield, egypt road. linda, the matriarch, made a remarkable recovery. inspiring so many with her grace and grit. >> linda is the strongest person. an incredible person. i didn't know she had it in her to be that strong. >> i think philip would've been very proud of linda. he would've been happy with her. >> philip is gone now. carey too. craig is locked away. to life sentences, plus another 85 years. effingham county had never seen what happened to the highs and hopes to never to again. i'm craig melvin, and this is dateline. >> my dad was my best friend, he just liked to make people smile. >> he would always boast about how he was an fbi agent. he was so proud. >> my brother and his friend came running down to the neighbor's house. >> just call 9-1-1! >> okay i'm calling. >> police department. can you come down here ma'am? >> what is going on?