Isabella beckons you closer so that she may convey her last wishes to you. Her speech was constantly broken by coughing fits and deep intakes of breath, but she was able to shell out this:
"My child, thank you for helping me through my last weeks of life. I must confess I knew of my predicament when we first met. There are reasons I needed someone to be here at this time. Although who it would be was completely random, I am glad it was someone like you. This house was entrusted to me by my grandmother when I was about your age. She said it was important that someone was always living here, otherwise terrible things might happen."
"What sort of things?" you ask nervously.
"The grounds that this house are built on are a nexus of great spiritual energy, magic, if you will, that, if harnessed by the wrong hands could wreak havoc and destruction across most of the Earth. Few know of its' existence, fewer still know of the magnitude of it's existence. There is only one other like it on the planet, out in San Fransisco, and it's guardians were recently forced to destroy it so that they could destroy the evil being that had harnessed it. But they did not have the bargain with evil that we have here."
"A bargain with evil?" you ask, shocked that this dear sweet old woman could be part of something like that.
"Yes, and that bargain, is the reason you are here now. The bargain states that as long as somebody on the side of good guards the grounds, no evil being may so much as watch it from their crystal balls, much less try to harness it. Hence the house was built to give the guardians a place to live while they watched over the grounds. Ideally the job is supposed to be passed through the family, but my own children died long ago, so I was forced to seek out others who could do the job. And so, I give you these grounds, and everything that stands on them. It is yours. All the meaningless legal mumbo jumbo is over there on my dresser; will, property rights, passage of ownership, yadda yadda, as well as your red and blue pills I promised you. Don't worry, there is nothing special you need to do, just live here, and evil will steer clear. Everything will be magically taken care of, except for the things we have been dealing with these past eight weeks, for reasons I have explained before. And now, it is my time." She closed her eyes, and you could feel the life force leave her body. You are sad, and promise a proper burial for her. You walk over to the dresser and pick up the pills and papers and head home. That is, to your parents home, since starting tomorrow, you will no longer live there.
After talking everything out with your parents, leaving out the magic stuff, you move in to Isabella's house and start your new life. And after 100 years of living there, you realize she was right. Evil never showed its' face, and your great-granddaughter was all set to take over when you passed on. She had already started getting her things in so she could get a headstart. As you drag yourself (120 year old bodies don't move very easily now, do they) to the bathroom, you see a box of her stuff on the counter, and in the box are two old bottles, one red, the other blue. You instantly recognize them and begin reminiscing. . .