Storyteller · Journalist · Author
Mark Horner
Stories told with more time, more depth and new tools. Start here and follow a path to the reporting, the book, the photography or the interactive learning.
About Mark →Where to go next
Four sites, one storyteller.
Beyond 90 Seconds
Reporting, film, photography and audio interviews for stories that deserve more than the 90 seconds local TV news gave them, from true crime to nature and wildlife.
September Sacrifice
The true crime book about the Girly Chew Hossencofft case, with reporting on the case since 1999 and its national media coverage.
Mark Horner Photography
Nature, landscape and wildlife photography, with a focus on the Pacific Northwest.
Explorables
Free interactive 3D learning tools, built with physicist and astronomer Dr. Christian Sasse, on the human body, wildlife, astronomy and physics. Mark’s projects so far:
Selected work
A few pieces worth a closer look.
Inside Celiac Disease
Watch gluten flatten the villi in a 3D model of the gut, see how celiac disease is diagnosed, then take the quiz.
Open the model →
Bald eagles in super slow motion
High-speed footage from Dutch Harbor, Alaska, shot by Christian Sasse on a Chronos high-speed camera at 1,057 frames per second, then interpolated, color-graded and edited by Mark.
Watch the edit →September Sacrifice
The story of the Girly Chew Hossencofft case, which Mark covered for years. First published in print by Kensington in 2004, it moved to Gregg Olsen’s Crime Rant Classics in 2014 and is now on Kindle and Audible.
On TV: the Hossencofft case
Sound bites from The Investigators, Dateline NBC, Crier Live, American Justice, Oxygen’s Snapped and KOB Eye on New Mexico, where Mark discussed the Girly Chew Hossencofft case.