i authorities concluded that pravin that varughese i's death was an accident, saying he was drunk, got lost in the wooden froze to death. but an autopsy found no alcohol in his blood and pravin guy's mother lovely was convinced there had to be another explanation. and police did not hear a key detail about the night pravin disappeared. here's dennis murphy with "at the edge of town". one >> reporter: in the town where her son had lost his life, tiny, softspoken lovely was finding a voice. >> i am not trying to point fingers or sign blame. we just want answers. >> reporter: the investigation appeared to be over, but lovely refused to give up. >> this is not over. >> no, this is not over. >> reporter: she filed a lawsuit against the city of carbondale and its police chief, accusing them of negligence. >> 12 days after the boy's