48 Hours

Watch 48 Hours Season 39 Episode 15 Online

“The Sneak Attack on Katlyn Lyon” — Watch "48 Hours" Season 39 Episode 15 online in HD for free. Check streaming providers, cast, and episode details.
Jan 31, 2026 Season 39 Episode 15 42 min TV-14
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48 Hours Season 39
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Season 39 Episode 15 — Aired on Jan 31, 2026 • runs about 42 minutes.

This page includes 1 official still(s) (when available) plus legal availability links.

Looking for “watch 48 Hours Season 39 Episode 15 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

When Katlyn Lyon Montgomery died in October 2022, her mother turned to TikTok to share her grief and demand justice. As the case evolved from a possible accident to a homicide, she built an online community to help hold Katlyn’s killer accountable.

Stills

Still from 48 Hours - Season 39 Episode 15

Cast

There isn�t detailed cast information available right now.

Episodes – Season 39

39 - 1
48 Hours - Season 39 Episode 1
The Boy Who Killed His Twin
Sep 27, 2025
39 - 2
48 Hours - Season 39 Episode 2
Murder in the Parking Garage
Oct 4, 2025
39 - 3
48 Hours - Season 39 Episode 3
A Death in the Stairwell
Oct 11, 2025
39 - 4
48 Hours - Season 39 Episode 4
My Uncle Joe's Murder
Oct 18, 2025
39 - 5
48 Hours - Season 39 Episode 5
Closing the Cold Case of Robin Lawrence
Oct 25, 2025
39 - 6
48 Hours - Season 39 Episode 6
The Han Family Murders
Nov 1, 2025
39 - 7
48 Hours - Season 39 Episode 7
Tracker Dakota Black
Nov 8, 2025
39 - 8
48 Hours - Season 39 Episode 8
The Setup Murder of Kristil Krug
Nov 15, 2025
39 - 9
48 Hours - Season 39 Episode 9
Help Find Molly Bish's Killer
Dec 6, 2025
39 - 10
48 Hours - Season 39 Episode 10
Joe Hunter's Mission
Dec 13, 2025
39 - 11
48 Hours - Season 39 Episode 11
Coached to Kill
Jan 3, 2026
39 - 12
48 Hours - Season 39 Episode 12
The Gaslighting of Hannah Pettey
Jan 10, 2026
39 - 13
48 Hours - Season 39 Episode 13
Melissa Rocuba's Final Moments
Jan 17, 2026
39 - 14
48 Hours - Season 39 Episode 14
The Mother I Wish I Knew
Jan 24, 2026
39 - 15
48 Hours - Season 39 Episode 15
The Sneak Attack on Katlyn Lyon
Jan 31, 2026
39 - 16
48 Hours - Season 39 Episode 16
The Rx Defense
Feb 7, 2026
39 - 17
48 Hours - Season 39 Episode 17
The Girl from Wahoo
Feb 14, 2026
39 - 18
48 Hours - Season 39 Episode 18
Sade Robinson and the Secret Beach
Feb 21, 2026
39 - 19
48 Hours - Season 39 Episode 19
The Woman Who Died Twice
Mar 7, 2026
39 - 20
48 Hours - Season 39 Episode 20
Jocelyn Peters and the Notebook
Mar 14, 2026
39 - 21
48 Hours - Season 39 Episode 21
What the Neighbors Saw
Mar 21, 2026
39 - 22
48 Hours - Season 39 Episode 22
Denise and Aaron Quinn Get the Last Word
Mar 28, 2026
39 - 23
48 Hours - Season 39 Episode 23
The Root Beer Float Murder
Apr 4, 2026
39 - 24
48 Hours - Season 39 Episode 24
Kimberly Langwell’s Hidden Grave
Apr 11, 2026
39 - 25
48 Hours - Season 39 Episode 25
Jade Colvin is Missing
Apr 18, 2026
39 - 26
48 Hours - Season 39 Episode 26
The Killing of Theresa Fusco
Apr 25, 2026
39 - 27
48 Hours - Season 39 Episode 27
The Love Bombing of Gloria Choi
May 2, 2026
39 - 28
48 Hours - Season 39 Episode 28
Beverly Hills 911
May 9, 2026
39 - 29
48 Hours - Season 39 Episode 29
The Man with Two Names
May 16, 2026
39 - 30
48 Hours - Season 39 Episode 30
Kouri Richins: Behind the Facade
May 23, 2026

Trailer / clip

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