- Sisters in Crime
 - Worldwide organisation of authors, booksellers, editors, librarians, teachers, and readers dedicated to combating discrimination against women in the mystery field. - (AU) Australia Sisters in Crime
- For writers, publishers, academics, and fans of crime fiction.
- Alaska Sisters in Crime
- Los Angeles Sisters in Crime
- A mystery writers' organisation for all women and men dedicated to the genre.
- NorCal Sisters In Crime
- Site showcases chapter sponsored activities, author profiles of chapter members, and events of interest to mystery fans in the Northern California area.
- Tombstone Chapter
- For readers, writers, and fans of mystery.
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