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Tetris is one of the most popular video games of all time, but few people know that one of the developers of the global sensation met a very tragic, complex and deadly end. On September 22, 1998, Vladimir Pokhilko, was found dead alongside his wife and their young son in their Palo Alto, CA, home. Now, more than two decades later, the Palo Alto Police Department homicide investigators revisit the haunting crime in Investigation Discovery’s The Tetris Murders. Throughout this gripping three-part docuseries, the investigators unearth new theories and evidence, further unraveling the mystery of this crime. What was once thought to be a murder-suicide, is now revealed to be something much more sinister and dark connections to Russia are suggested.