Abby Thomas' 11-year-old student Merri is finally warming up to her. Her friendship with John Roberts is also heating up. He's definitely marriage material. Except for the fact that when she tells him about he thinks she's crazy.

Because a computer program that allows you to rewind and fast forward the lives of people from long ago is surely pure fantasy. Then John sees for himself that it's not.

Together they use to help the "Old Dears" next door with their family tree. Rummaging around in their history, they discover that the 85-year-old twins have been keeping a secret from each other since 1941. And the ladies' ancestors have a few secrets of their own.

Convicted in 1871 of murder and arson, Reuben Buchanan is a blight on the family name. But was he really guilty? Abby and John must get inside the mind of a murderer to find out.

But there are also heroes in the family tree--like Reuben's ancestor Nathan Buchanan. That doesn't mean he didn't have a few secrets, too. And Abby and John find one that's lain undiscovered for over 200 years.

It began life as Nathan's log cabin built outside the walls of Lewis and Clark's 1803 Camp River Dubois. It was added onto through the years, and at one time it was a stage coach inn called Shake Rag Corner. Today it is a condemned derelict. While watching its history unfold, Abby and John discover a legacy waiting to be reclaimed and that God's promise to bless a thousand generations is really true.

KEYWORDS: time travel, coming of age, lewis and clark expedition, mystery, young adult fiction