While remodeling a house into a bed and breakfast inn, brother and sister combo Jake and Kellie find more than they bargain for in this first of The Renovation Mysteries series as they discover secret passages and a tunnel used by the Underground Railroad to aid escaping slaves. When Kellie stumbles on a diary kept by the original owner's daughter, she reads hints of a valuable treasure hidden somewhere in the house. Can they really find the treasure? And who is the mysterious stranger who keeps trying to delay their work with his nighttime break-ins? This book is the first of three in a series involving Jake and Kellie.