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Mystery Case Files

Default: Daily at 6:00 AM ET · you choose your own time

4.3 (6 ratings)

What You Get

Mystery Case Files turns your inbox into a crime scene. Each morning, you get a brand-new mini whodunit: a short case description, a list of suspects, physical clues, and witness statements. Your job: figure out who did it. Yesterday's case is solved at the top of each edition, so you can compare your deduction skills. Perfect for mystery novel fans, true crime enthusiasts, or anyone who loves a good puzzle.

Mystery Detective Interactive Crime Puzzles

Yesterday's Edition July 26, 2026

Clues

Security footage shows Elena entering her dressing room but the camera malfunctioned for exactly 8 minutes during intermission...

The Vanished Violin Virtuoso

The Vanished Violin Virtuoso

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Frequently Asked Questions

A daily mini whodunit delivered to your inbox. Read the case, examine the suspects, and solve the mystery before tomorrow's reveal. It's a free AI-generated newsletter from NLFactory. Default delivery is daily at 6:00 AM ET, but every subscriber picks their own time at signup.

Mystery Case Files is completely free. NLFactory's pre-built newsletters are included in the free try-it tier. Just sign up and subscribe, no credit card required.

Default delivery for Mystery Case Files is daily at 6:00 AM ET, but you set your own time and days at signup: daily, weekdays, weekly, or any custom schedule. Every edition is freshly generated by AI, so the content is always unique and up-to-date.

Yes! Click "Send Me a Sample" on this page to receive yesterday's edition in your inbox, no account required. If you like it, you can sign up free to get it every day.

Absolutely. Every newsletter email includes an unsubscribe link in the footer. You can also manage all your newsletter subscriptions from your NLFactory control center at any time.

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