>> carl pressley is the adopted grandson of bonnie harkey. bonnie harkey had a daughter, connie.rl pressley at at a very young age. >> reporter: when you hear that that call's come in, you're thinkin', "oh, this is"-- what? >> well, i was definitely concerned. >> reporter: why so much concern over a grandson's visit to his elderly grandmother? that's a tangled tale really, that begins with the way carl pressley came to join the harkey clan in the first place. >> connie said that she adopted him from a homeless woman, a homeless couple. they were living in a car. >> reporter: from a homeless couple. >> yeah. and that they couldn't take care of him and so they were willing to give him up for adoption. that's what i know. >> reporter: teresa says there was always something little bit "off" about carl. something that tended to make other people uncomfortable. >> it was very odd and very sad at the same time as he seemed to be a very lonely, needy child. very clingy child. and nobody really seemed to want him to cling to him. >> reporter: but teresa says there was nothing bonnie would