Between 1999 and 2003, Chinese authorities would be rattled by a series of viscous and brutal murders taking place in various provinces such as Anhui, Hebei, Shaanxi, and Shandong.

But when they finally detained the culprit, Yang Xinhai, they would be shocked at the full extent of his crimes, with Chinese media believing that he had carried out the country's longest and grisliest killing spree; ultimately dubbing him the "Monster Killer".

Tune in to find out more.

If you would like to get updates or reach out to the Stranger Danger crew, you can follow on Instagram @strangerdangerpodcastsg or send us an email at [email protected]

Brought to you by Mediacorp.

See omnystudio.com/listener for privacy information.