" She started across the threshold. Mikhail caught her arm.
“Your own free will; say it.”
“My own free will.” She stepped into his home, her lashes sweeping down. Raven missed the look of savage joy that lit his dark, chiseled features, but she felt the floor shift beneath her feet. An old, obscure myth rose up to haunt her. Never enter the home of a vampire of your own free will. It gives him power over you. "

― Christine Feehan , Dark Prince (Dark, #1)