The souls of Caroline and Luke are in the bodies of the two old people, and the two old people showed stroke symptoms because of the potion (when the heroine first came, Violet kept telling her to give Ben the medicine on time, it can be seen that That potion has to be drunk all the time to maintain stroke symptoms).
In the end, the two old people were sent to the hospital, and Caroline's body, occupied by the soul of the black witch, asked Jill to take care of them.
So in the hospital, I personally feel that it is not so easy to fill the medicine. Even if Jill feeds the medicine without knowing it, the hospital's examination should be able to detect the abnormality of the old man's blood (unless the medicine really relies on psychological effects, but it does not seem to be possible).
Therefore, the two still have a chance to speak again in the end, and the two wizards whose personal affairs occupy their bodies will not be clear, and they still have the possibility of winning trust.
After that, Jill and their other friends can help them escape the control of the two wizards and ask for the help of other "poison" wizards, so as to possibly exchange their bodies.
I know what I'm talking about is a bit silly, but I really don't understand the act of the two wizards who sent the old couple to the hospital and let Jill take care of them, wouldn't it be better to let them die silently and naturally at home...
PS The soul is really an inexplicable thing. After a person dies, does the soul die? If you can't die, then why use someone else's body to achieve the purpose of longevity?
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