Derinkuyu is an underground city in Türkiye. It has existed for thousands of years. Who built it and when?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/06/16/s04e24-mysterious-places-derinkuyu-who-built-it/

Nicholas Barclay was 13 years old when he disappeared on June 10, 1994. Later a boy claiming to be Nicholas was returned home to the family. What happened to Nicholas?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/06/09/s04e23-missing-person-nicholas-barclay-what-happened-to-him/

Jeanne Calment was born on February 21, 1875. She died at the age of 122 in 1997. Or did she?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/06/02/s04e22-identification-mystery-jeanne-calment-did-she-really-live-to-122-years-old/

The "Band of Holes" are a set of thousands of shallow holes in Pisco Valley in Peru. What were they used for?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/05/26/s04e21-mysterious-places-pisco-valley-holes-who-built-them-and-what-were-they-used-for/

On the morning of Australia Day, 1966, three children, Jane, Arnna, and Grant, left for Glenelg Beach. They never returned home. What happened to them?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/05/19/s04e20-missing-persons-beaumont-children-what-happened-to-them/

Twins Dannette and Jeanette Millbrook disappeared on March 18, 1990. What happened to them?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/05/12/s04e19-missing-persons-dannette-and-jeanette-millbrook-what-happened-to-them/

On July 25, 2001, blood rain began falling on Kerala, India. What caused it?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/05/05/s04e18-mysterious-phenomenon-blood-rain-in-india-what-caused-it/

Frederick Valentich was 20 years old when he disappeared during a flight on Saturday, October 21, 1978. What happened to him?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/04/28/s04e17-missing-person-frederick-valentich-what-happened-to-him/

On September 15, 2007, at 11:40:14.4, a meteor hit the ground near Carancas, Chucuito, Peru. Shortly afterward, the villagers who came into contact with the meteor stared falling ill. What happened?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/04/21/s04e16-mysterious-object-carancas-meteor-how-did-it-make-people-ill/

The Paraná Delta Eye is a perfectly round island that floats around the Paraná Delta in Argentina. What created it?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/04/14/s04e15-mysterious-places-parana-delta-eye-what-is-it/