AMERICA'S MOST WANTED: L-R: John Walsh and Callahan Walsh. CR Michael Becker /FOX. © 2024 FOX Media LLC.

AMERICA'S MOST WANTED: L-R: John Walsh and Callahan Walsh. CR Michael Becker /FOX. © 2024 FOX Media LLC.

AMERICA'S MOST WANTED: John Walsh. CR: Michael Becker /FOX. © 2024 FOX Media LLC.

AMERICA'S MOST WANTED: Callahan Walsh. CR: Michael Becker /FOX. © 2024 FOX Media LLC.