Mysterious Unsolved Cases With Anonymous Letters, Part 5

In the fifth installment of our series on unsolved cases involving anonymous letters, we dive into three hauntings cases where the perpetrators used the postal service as a weapon of psychological terror. From coded threats to agonizing postcards sent to grieving parents, these killers remained elusive despite leaving a paper trail. 00:00 Intro 00:12 3X Murderer 05:14 Silverwood Postcards 09:54 Oakland County Killer Do you have a theory about the identity of "3X" or the origins of the Oakland County letters? Let’s discuss the evidence respectfully in the comments. Enjoyed the video? 👍 Like this video to help the algorithm! 🔔 Subscribe and turn on notifications for Part 6. 💬 Comment which case bothered you the most. #truecrimestories #unsolvedmysteries #coldcases #unsolvedmysteries #firesideunsolved Like, comment and subscribe for more unsolved and mysterious content with Fireside Unsolved. Join Fireside Unsolved to get access to exclusive perks: https://www.youtube.com/channel/UCc5JfIC9q1YmOpQNKEzYQNg/join Want some Fireside Unsolved merch? Check out the Official Fireside Unsolved Online Store here at www.firesideunsolved.com https://www.instagram.com/firesideunsolved https://www.tiktok.com/@firesideunsolved Copyright Disclaimer Under Section 107 of the Copyright Act 1976: Allowance is made for "fair use" for purposes such as criticism, commenting, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational, or personal use tips the balance in favor of fair use. All content presented on Fireside Unsolved is intended for educational and informational purposes. Where applicable, copyright remains with the respective owners. If you believe your work has been used in a way that violates your rights under copyright law, please contact us directly.