WATCH: Fox News Digital captures camera flashes inside Annie Guthrie's home

Investigators returned to Annie Guthrie's home in Tucson, Ariz., on Saturday. Fox News Digital captured video of what appears to be camera flashes inside the home. (DWS for Fox News Digital)

Investigators returned to Annie Guthrie's home in Tucson, Ariz. on Saturday, Feb. 7. Fox News Digital captured video of what appears to be camera flashes going off inside the home. (DWS for Fox News Digital)