Apex Book Company has opened their flood control gates to dark science fiction novels for the month of November. Until 30 November only, they’lll be taking submissions of novels between 50,000 and 100,000 words (include a query letter, one-page synopsis, and the first three chapters). They offer an advance against royalties.
For full submission guidelines, see this page.
Apex’s most recent books include Michael A. Burstein’s I Remember the Future, Beauty & Dynamite by Alethea Kontis, and Mama’s Boy and Other Dark Tales by Fran Friel. They’re also the publishers Apex SF & Horror Digest.