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The Fall Line: True Crime

The Banks of Two-Medicine: The Disappearance of Arden Pepion

The Fall Line: True Crime

The Fall Line® Podcast, LLC

True Crime, News

4.64.4K Ratings

🗓️ 10 June 2026

⏱️ 32 minutes

🧾️ Download transcript

Summary

In April of 2021, three-year-old Arden Pepion was taken to a shooting range on the banks of the Two-Medicine River on the Blackfeet Nation reservation in Montana. She hasn't been seen since—and despite years of search efforts, her family still doesn't have an answer. What happened to Baby Arden? In the first of a two-part series, we cover her disappearance and the experiences of her paternal grandmother, cousin, and MMIP advocate Rhonda Grant Connelly. 

Elevate your summer wardrobe. Go to Quince.com/fallline  for free shipping on your order and 365-day returns. Now available in Canada, too. 

Anyone with information about Arden's whereabouts can contact Bureau of Indian affairs at 1- (833)-560-2065, text BIAMMU at 847411 or email OJS_MMU@bia.gov.

The Fall Line® is an investigative true crime podcast focused on cold cases, unsolved murders, missing persons, and unidentified John and Jane Does in the United States. We deliver in-depth reporting and interviews with law enforcement and forensic experts, examining unsolved homicides, disappearances, serial crimes, and the evidence behind them. Victim-centered and research-driven, we focus on cases still seeking answers.

Learn more about our cold-case coverage at our Episode Guide

 

Bring Arden Home Facebook: https://www.facebook.com/groups/562028131435544/

 

Submit a case to The Fall Line: https://www.thefalllinepodcast.com/case-submissions

Laurah's book LAY THEM TO REST: https://www.hachettebooks.com/titles/laurah-norton/lay-them-to-rest/9780306828805/

Sources at our website: https://www.thefalllinepodcast.com/sources

Join us on Patreon to fund therapy initiatives: https://www.patreon.com/thefalllinepodcast

We work with Amplitude Media Partners (AMP) to power our advertising and grow with the right sponsors. Contact AMP with any ad inquiries; sales@amplitudemediapartners.com. 

All rights reserved, 2026

Transcript

Click on a timestamp to play from that location

0:00.0

This is the fourth episode in our latest season, featuring missing persons across the United States,

0:05.0

and the first in a two-part series.

0:07.0

The views, thoughts, and opinions expressed are solely the interviewee zone.

0:11.0

All individuals are presumed innocent until proven guilty in a court of law.

0:16.0

This episode discusses child endangerment.

0:19.0

Listener discretion is advised.

0:29.7

This is the fall line.

0:37.2

When we first met our friend Rhonda Grant Connolly back in 2023, she had not yet formed her advocacy group, Blackfeet MMPIP.

0:40.5

We connected with her through another colleague and activist, Carolyn DeFord, whose mother

0:45.3

Leona Leclair Kinsey, we've covered on the show several times before. When we initially

0:51.0

spoke with Rhonda, she was grappling with what she viewed as an epidemic on the Blackfeet Nation Reservation.

0:57.8

So many unsolved disappearances and deaths, cases gone cold, and families who felt that they had nowhere to turn.

1:05.3

When she told us the story of her own nephew, Matthew Rattlesnake Grant's murder, she also mentioned other people's lost

1:11.9

children, Leo Wagner, Ashley Loring Heavy Runner, Arden Pepian. In 2023, the state's newsroom

1:20.0

reported that though Native Americans make up 7% of the state population, they account for 30%

1:26.2

of missing people in Montana. That's a reality that

1:29.6

Rhonda already knew well. The three people we mentioned, Leo, Ashley, and Arden, they're still missing

1:36.0

today. And Arden remains the youngest missing person on the reservation. When we first began our

1:41.8

work on Matthews' case, three-year-old Arden had been missing for two years.

1:47.1

Now, in the summer of 26, it's been five.

1:51.4

Rhonda founded Blackfeet MMP with others, mostly women, who wanted to see change.

1:57.3

Billboards have gone up, rallies have been arranged, and direct help, like search parties and DNA

...

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