A letter arrives at your door.
An old friend is facing a challenging mystery, and they need your help.
Every week you'll receive one letter with new evidence from your worldwide network of sources & experts.
Can you solve the mystery?
Hone your deductive skills by digging into a new Victorian-era mystery each month.
One by one, letters will arrive at your door with new clues to help you build a theory of the case.
Compete with detectives from around the globe for the title of Featured Detective. Prove your deductive mettle.
At the end of each case, read through Sherlock’s solution letter and compare it to your own to see how you did.
— The New York Times/Wirecutter
Hear the perspectives of our “detectives”
"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
“Well done on a fantastic mother's day gift. My mother and her friend are greatly enjoying their mystery subscriptions. I have to say, they're well written and a joy to read. They look forward to receiving their letters and check their mailboxes excitedly”
- Roo C., California
