General Knowledge
True Crime Unsolved Mysteries Quiz 🔍
DB Cooper, the Zodiac Killer, and the cases that still haunt investigators.
DB Cooper, the Zodiac Killer, and the cases that still haunt investigators.
DB Cooper's 1971 hijacking remains the only unsolved case of air piracy in US history — the FBI investigated for 45 years before closing the case without identifying him.
Each round presents 10 randomized multiple-choice questions drawn from a pool of 50, so every playthrough is different. You get instant feedback with explanations after each answer, plus a shareable score at the end.
You'll explore famous unsolved murders like Jack the Ripper and the Black Dahlia, cold cases cracked by modern DNA technology like the Golden State Killer, mysterious disappearances including Jimmy Hoffa and Amelia Earhart, and how forensic advances from genetic genealogy to digital forensics are finally closing cases that stumped investigators for decades.
Jack the Ripper is widely considered the most famous unsolved murder case in history. The unidentified serial killer terrorized Whitechapel, London in 1888, killing at least five canonical victims. Despite over 130 years of investigation, no suspect has ever been conclusively identified.
Genetic genealogy — uploading crime scene DNA to public databases like GEDmatch and building family trees from distant relatives — has solved over 100 cold cases since 2018. The technique was famously used to identify the Golden State Killer, Joseph James DeAngelo, in 2018 after he evaded police for over 40 years.
DB Cooper is the alias given to an unidentified man who hijacked a Northwest Orient flight on November 24, 1971, extorted $200,000 in ransom, and parachuted from the plane over the Pacific Northwest, never to be seen again. It remains the only unsolved case of air piracy in US aviation history. The FBI officially suspended active investigation in July 2016.
Last updated: March 2026