This paranormal phenomenon often occurred when a victim's dependency to the vampire was pitted against some power bent on destroying that bond.

Предложение встречается в следующем контексте:

Laura's body snapped tight, like a giant steel spring had suddenly formed inside her. The blankets flew off her with the force of it. She let out what sounded like a death rattle, the tongue lolled out of her mouth, and then her body began to rise in the most fascinating way. This paranormal phenomenon often occurred when a victim's dependency to the vampire was pitted against some power bent on destroying that bond. Hunters frequently had an opportunity to observe this behavior