LOUISVILLE, Ky. - The search for Andrea Knabel, a Louisville mother who went missing last August, will be featured Tuesday morning in a new Investigation Discovery episode.

Knabel's case will air as part of "The Missing," an Investigation Discovery series that highlights "tragic missing persons through the lens of the unwavering souls who have dedicated their lives to finding answers. Viewers will hear the heart-wrenching stories of those who have gone missing from loved ones they left behind.”

The episode on Knabel will start at 11 a.m. Tuesday and can be watched on Investigation Discovery's Facebook page.

Knabel, who has since turned 38, disappeared in the early morning hours of Aug. 13, 2019, after walking to her mother's home on Chickadee Road in Audubon Park, where she had also been living.

Since then, numerous leads and possible sightings in the Louisville area and Southern Indiana have not resulted in a breakthrough.

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But the team of private investigators, family, friends and volunteers from around the country have not given up in their search for the single mother of two boys.

Mike Knabel, Andrea's father, said that while the coronavirus has resulted in fewer outdoor searches, the online work to spread the word about her case has continued to ramp up.

Several cases of people trying to extort money from the family and send death threats in relation to Andrea's case have been overshadowed by the positive energy of private investigators, family and volunteers not giving up, Mike Knabel said.

"This is going full bore, and it is not even close to stopping," Mike Knabel said. "...There's plenty of energy."

Andrea's sister, Erin Knabel, handles the social media pages related to the missing persons case and has put together a volunteer team of "Andrea's Angels" that puts up flyers and shares information on her case in different parts of the country.

A $5,000 reward is being offered for information leading to her whereabouts as well as a $100 reward for taking a photo of her if you believe you see her.

Reach Billy Kobin at bkobin@courierjournal.com or 502-582-7030. Support strong local journalism by subscribing today: courier-journal.com/subscribe.