Episode Details

For decades, Si Quey (Si Oi) was remembered as Thailand's most notorious cannibal and child murderer. His preserved body stood inside the Siriraj Medical Museum for more than 60 years, becoming one of the country's most infamous true crime exhibits. But was he really the monster history remembers?

In this episode of You Can't Unhear, we explore the disturbing case of Si Quey, a Chinese immigrant whose alleged crimes shocked Thailand in the 1950s. From his traumatic childhood during wartime China and the horrifying accusations of cannibalism to the child murders that terrified the nation, we unravel the story that transformed one man into a legend of fear.

Then, we uncover the shocking twist that reignited the case decades later. New investigations, public petitions, and growing doubts have led many to question whether Si Quey was actually guilty, or whether he became the victim of prejudice, media hysteria, and a possible wrongful conviction. Was Thailand's most feared cannibal truly a serial killer, or one of the country's greatest miscarriages of justice? This episode explores one of the most controversial true crime mysteries in Thailand, examining the evidence, the conspiracy theories, and the haunting legacy of a man whose story continues to divide the nation.