The Case of the Missing Deed

The Case of the Missing Deed: Teaspoon Detective is a FICTION - JUVENILE: Action & Adventure written by Ellen Schwartz.
The family is in two cars each one trying to be first to get to Grandmothers house. When they get there another car is leaving. It turns out they are from a mining company who is trying to buy out every one's land. 
Grandmother does not want to sell but they tell her if she cannot come up with a deed to the property she will loose her land. Grandfather had told her where he had hidden the deed before he had passed away but grandmother could not remember.
After searching the house and out buildings and not locating anything they decided to fix something that Grandmother liked because she was not eating. When they looked through the recipes they found little notes that Grandfather had written, clues as it was.
They  hunted for more clues and tried to find out what they meant.
They weren't sure who they could trust and who they couldn't.
I enjoyed this book and I think other children will like it too.