A potential tipster in the Nancy Guthrie probe may be female despite using male pseudonyms, as experts say human sources may solve the unsolved case.
https://www.foxnews.com/us/nancy-guthrie-case-could-hinge-mystery-tipster-emailed-tmz
https://www.foxnews.com/us/nancy-guthrie-case-could-hinge-mystery-tipster-emailed-tmz