Nancy Guthrie vanished on February 1 from her secluded Tucson, Arizona, home in the dead of night.

The saga has become a waking nightmare for Guthrie’s family, with her daughter, “Today” show host Savannah Guthrie, making a series of increasingly heartbreaking pleas for her mother’s abductors to “do the right thing” and bring the Guthrie matriarch home.

Despite an extensive investigation – and assistance from community members – authorities appear no closer to publicly identifying a leading theory or motive behind Guthrie’s abduction.

Investigators say they are still working to piece together the fragmented puzzle of evidence they’ve gathered. And now, new details about the initial notes that launched a desperate search for Guthrie have opened a new chapter in the saga.

From chilling surveillance footage to DNA and a collection of gloves, here’s a look at what we know about the evidence in the investigation: