Meet A Mystery Game For Adults

The Game Is Afoot! Use letters from Sherlock Holmes & his associates to solve Victorian-inspired murders, kidnappings, thefts, and more.

Send Me Mysteries

Over 1 Million Letters Mailed

“Engaging and Well-Written.”

As seen in Wirecutter

About Our Mysteries By Mail

solve heists from home. cartoon.

Mysterious Letters

Look forward to checking your mailbox again! You'll get three clue letters and one solution letter per case.

solve murders and murder mysteries. cartoon.

Challenging Mysteries

Catch crooks, crack secret ciphers, and foil nefarious schemes using the clues in your letters.

Catch crooks and more. cartoon

A Global Competition

Compete with Sherlock Holmes and your fellow detectives for the coveted Featured Detective award.

Ready For Mysterious Letters?

Join Dear Holmes today to start your consulting detective adventure.

Send Me Mysteries

Listen Along...

All Dear Holmes packages include access to the members-only Dear Holmes podcast.

This private podcast features audiobook-quality narrations of each Dear Holmes clue and solution letter.

Wondering what these episodes sound like? Listen to a sample episode here.

Member Testimonials

"Dear Holmes is a delight, with intriguing mysteries brought by characters that could have walked straight out of a real Sherlock Holmes story."

"My husband and I eagerly looked forward to every letter."

— Maria Alexander, Award-winning author

“I got my first clue today. I've spent part of this evening trying to brute force decode the clue with some golang code, but no success. Such an interesting and entertaining gift.”

— Matt F., Colorado (Via X)

“Well done on a fantastic mother's day gift. My mother and her friend are greatly enjoying their mystery subscriptions."

"They're well written and a joy to read. They look forward to receiving their letters and check their mailboxes excitedly.”

— Roo C., California (Via X)

Join Our Detective Corps

Send letters to your family's sleuth or treat yourself to a mysterious treat.

3 Mysteries

A season of mystery-solving for your sleuth.

Free First-Class Postage

6 Mysteries

Six months of victorian-era crime-fighting fun.

Free First-Class Postage

12 Mysteries

A full year of victorian-era mysteries to investigate.

Free First-Class Postage

When should we mail your welcome letter & first mystery?

A New Mystery Monthly

Free First-Class Postage

30-Day Satisfaction Guarantee