Episodes 9 to 12 of When Life Gives You Tangerines reference two of South Korea’s most notorious criminal cases from the 1990s: the Hwaseong serial murders and the Frog Boys disappearance.

In 1986, a tiny rural town near the city of Hwaseong, Gyeonggi province, was rocked by a series of rapes and murders targeting its female residents. A total of 10 women were killed over the course ...