As the operator of her own small press, Dark Hart Books, Sadie Hartmann has developed deep expertise in the marketing of this genre. Here she chats with Philip Fracassi about building a "bookstagram" presence (her Mother Horror persona boasts over 21,000 followers), where Stephen King is an active follower, and also talks our agorophobic host through the phenomenon of BookTok.

Hartmann also operates the Nightworms book club, which curates packages of horror related books and merch. She reviews horror for SCREAM magazine and  ...