Main Content

Mark of a Serial Killer

Woman Calls 911 After Mysterious Knocks On Her Door At Night

Also available on the nbc app

Robyn Oldenburg, a Bellevue resident, had heard reports of a serial killer active in her area. She called 911 one night when a stranger kept knocking on her door.

Available until 05/13/21
Tags: oxygen, True Crime, serial killers, Mark of a Serial Killer
S3 E32 minTV-14HighlightReality and Game ShowPrimetime
We and our partners use cookies on this site to improve our service, perform analytics, personalize advertising, measure advertising performance, and remember website preferences. By using the site, you consent to these cookies. For more information on cookies including how to manage your consent visit our cookie policy.