India, June 7 -- A renowned "no body" homicide expert, Tad DiBiase, has revealed one factor that could hurt a potential case in Nancy Guthrie's disappearance. Nancy has been missing for over three weeks. While many experts believe she may be dead, her body has not been recovered.

However, if she really is dead, and her body is not recovered, prosecutors can still file charges.

DiBiase and NewsNation's Brian Entin were discussing the lack of cadaver dog searches since the Pima County Sheriff's Department put a hold on them back in March when the topic arose. DiBiase explained that not having searches is a potential twofold problem.

"To me, there's two reasons why it's problematic not to do a search," DiBiase said. "One is, because you o...