The Mystery of the Missing Grandma

Hedy and Spencer didn't really want to be stuck at their grandfather's house, but their parents went on an expedition, and the brother and sister had to accept it. In the huge dusty mansion, standing alone on a hill, there... is no internet, video games, or mobile service. But instead, all the doors are different colors, there are plenty of magical artifacts and incredible creatures! But the most unbelievable thing is that the kids discovered: their grandmother disappeared many years ago and is now trying to return from another world! She leaves notes all over the house with just two words: "Find me". Hedy and Spencer must figure out what really happened many years ago. Perhaps an evil spirit is involved, but how can the kids distinguish truth from illusion and help Grandma return home?!
AND THE OLDEST SECRETS WILL FADE AWAY LIKE SMOKE.