The Reluctant Husband

Nathan Montague Porter has an unhealthy obsession with expensive old books and a rich aunt and fiancée, both found dead under not-at-all suspicious circumstances. When his experiments in magic and SCIENCE reach something not of this world, he also catches the attention of Sir Jack Sauvant, who invites Nathan down to his country house to attempt some grisly magical experiments. 

Little does our terrible protagonist know that it is one of Sir Jack's maids, Deirdre Wend (Miss, thank you very much), who actually holds the key to forbidden knowledge - but she won't give it up unless he takes her to the pictures first. 

Standalone body horror novelette for anyone who has ever wished 1930s dramas had more weird tentacle breasts in them.