Butterfly Effect Duet set

Hardcover omnibus of the Butterfly Effect Duet — Wings of a Butterfly and its sequel Heart of a Killer — the October/November 2026 Twisted Horror Erotica & Romance subscription box, featuring an exclusive redesigned illustrated cover, digitally designed edges, and illustrated endpapers.

Wings of a Butterfly: Skylar is in love with her best friend, Nicole, and determined to wait for her — but her father's gaslighting about her sexuality is making things worse. After a brutal argument with her dad, Nicole decides her friend needs some fun and finds an alternative music festival to lift her mood. What Skylar doesn't know is that her world is about to be turned upside down: a man who preys on women at these events has set his sights on her. The wings that made her soul beautiful will be torn from her, and the secrets that unfold will force her to make a change.

Content warnings: taboo romance, dark secrets, serial killer, stalking/kidnapping, violence, erotic horror — check triggers before reading.