only on al jazeera america uth >>> here the remains of 31 people were made months ago.ed in a grave below this house. those killed were believed to have been held here after they were kidnapped.

only on al jazeera america uth >>> here the remains of 31 people were made months ago. the bodies were dumped in a grave below this house. those killed were believed to have been held here after they were kidnapped. only a few of the bodies were identified. thousands taken, never seen again. >> reporter: more than 22,000 people have disappeared, since the mexican government launched a war against cartels. families in limbo, wondering if they are dead or alive. we are here to investigate one of the worst disappearances in latin america and to meet the families searching for answers and justice that never seems to arrive. >>> a sign with details hangs in front of her house. >> it has become a regular thing. remember when boko haram overran villages and towns, in remote locations, most of the people left their homes. these are the same people being attacked. last time they were there, 1.5 million people fled their villages are living in maiduguri. people are actually exhausted and now they are devising a means of protection in light of recent events in that area. >> all ri