>> no, i can not. >> reporter: we wanted to know what turned deborah davis into a grinch, so we paidstefully decorated colonial. note her festive wreath right there. mrs. davis, this is matt gutman from "20/20." i can hear you talking to the dogs behind the door. why did you take those packages, and why did you take the wreath? maybe the dogs know. davis has returned the ruth family's packages, and they're now wrapped up safely under the tree. and best of all for marti ruth, her wreath is back where it belongs. don't mess with this lady's wreath. >> exactly. >> that's right. >>> next, the bah humbug award goes to this guy. when they didn't like his lights, he declared war with a nightmare christmas. but it's no silent night when we go after him. when "20/20" returns. ♪you better pledge ♪ your allegiance♪ ♪you're not the only one ♪listen up forefathers ♪i'm not your son ♪you better help the children ♪let them have some fun ♪some fun ♪some fun. what if you could give her diamonds... in her favorite color? diamonds that capture her look, her style...perfectly. kay jewelers presents the

celebrates the holiday sesason with a special concert featuring deborah voight ♪ the holly and the ivy ♪ >> narrator: and john rhys-davis. rhys-davis: they know christmas >> narrator: this program was made possible in part by ronald c. and kaye gunnell, the george s. and delores dore eccles foundation, the j. willard and alice s. marriott foundation, the cleone peterson eccles endowment fund, the charles and janet stoddard foundation, the sorenson legacy foundation, the alan and jeanne hall foundation, and the gfc foundation. ♪