The Demon Inside Her (Night Breeders)

Rebecca is bored to death with her dead-end job and her predictable, lazy lover Robert. During a school field trip with her seventh-grade class she falls into the clutches of a mysterious mountain man who seethes of testosterone. He takes forceful advantage of Rebecca's pent up sexual lust and leaves her previously mishandled pussy in utter disarray. The monster of a man eventually releases her but leaves behind one last surprise - his demon seed grows in Rebecca's fertile young body.