However, since the plan was already underway, Constantine felt it was better to see it through. Out of curiosity, he conducted some research.
He discovered that as the bloodline grew thinner—one vampire biting another, generation after generation—many vampires had been left with almost no power, only weaknesses.
In other words, they knew no magic, were not much stronger than ordinary people, still needed blood to survive, feared sunlight and holy artifacts, and were more like half-human, half-vampire creatures.
But perhaps because of this, they had one great advantage: the fathers who transformed them had far less control over them. The connection still existed, but their bloodlines were so thin that once the distance grew too great, it became difficult to sense them at all.
This showed Constantine a possibility.
Perhaps there was no need to carve runes into their hearts. Constantine only needed to select descendants with extremely thin bloodlines and send them into the past. Their fathers would likely find it difficult to contact them then. After all, the greatest distance in the world was time.
Or rather, they could determine exactly which generation of vampires had bloodlines powerful enough to control their descendants across time. Aside from those vampires, wouldn't all vampire descendants become effectively free once sent into the past?
The results were even more encouraging than Constantine had expected. The vampires' unchecked expansion had brought many consequences, one of which was that thin-blooded vampires had become unimaginably numerous.
So Constantine adjusted the plan slightly. He no longer needed vampires to come looking for him. He went directly after thin-blooded vampires, threw a sack over them, and tossed them through the Door of Time.
Once those vampires were thrown into the past, their fathers in the present could not contact them. And in the past they returned