A short, curated guide — not an automatic related dump. Figures come from SubMouse's safe-for-work directory when we have them.
r/UnresolvedMysteries (about 4.5M members, directory rank #206) focuses on unresolved cases with strict posting guidelines and bans on very recent murders/disappearances. Broader true-crime discussion lives elsewhere.
See also truecrime vs unresolvedmysteries on SubMouse.
Stay on UnresolvedMysteries for researched unresolved-case posts. Use TrueCrime for broader true-crime content, and TrueCrimeDiscussion for open discussion of crimes and legal processes.
When to choose it: Broader true-crime content beyond unresolved-case write-ups.
Why it is here: Paired on truecrime vs unresolvedmysteries (about 3.4M members, rank #307).
How it differs from r/UnresolvedMysteries: Broader true-crime remit versus unresolved-mystery case format.
Everything Crime
When to choose it: Open discussion of actual crimes and legal processes, including video/link kickoffs.
Why it is here: Sibling true-crime discussion room (about 1.3M members, rank #794).
How it differs from r/UnresolvedMysteries: Discussion-first format versus unresolved-case research posts.
Run the automatic finder for r/UnresolvedMysteries (results are matched from our directory; that page is not indexed): Find related to r/UnresolvedMysteries.
Members and public descriptions come from SubMouse's safe-for-work directory (as of 2026-11-02 UTC); 7-day growth measured from 2026-10-26. Posts/day and culture claims appear only when we have them — missing fields stay n/a. Directory rank is listing order. Communities outside the published Top 100 open in the info tool instead of a full community page. Guide updated 2026-11-07.