Watch Nancy Grace Mysteries Friday night at 8 p.m. ET on HLN.
A teen honor roll student is walking to her summer job interview at Applebee’s when she suddenly vanishes in broad daylight. She’s just blocks from her home when she’s snatched on a busy street. Days later, her body’s found stuffed in a garbage bag on the side of the road. Tonight, on Nancy Grace Mysteries – what happened to Chanel Petro-Nixon and who is behind her gruesome killing?