The song "Mistress of the Dark" by House of Lords is about an intense and passionate attraction towards someone who is mysterious and alluring, referred to as the "mistress of the dark." The lyrics describe the narrator's longing for this person, regretting missed opportunities and moments that could have been shared. The song explores the theme of unfulfilled desires and the lingering impact they have on the narrator's life. The mistress of the dark represents a figure of temptation, almost supernatural in her allure. The lyrics imply that the narrator feels powerless and entranced by her presence, unable to resist her spell. The reference to the "dungeons of the heart" suggests that the attraction and connection with the mistress of the dark come from deeper, hidden emotions and desires. The lyrics also mention "dark sacrifice" and "silhouettes of temptation," further emphasizing the intense and captivating nature of this relationship. Overall, "Mistress of the Dark" portrays a longing for a connection that was never fully realized and the lasting impact it has on the narrator's life. It explores themes of missed opportunities, unrequited desire, and the alluring power of an enigmatic figure.