The Other Cahill (A 39 Clues fanfiction- COMPLETED )

Guess what? Alistair Oh had a adopted daughter that no one heard of. What happens after Alistair Oh gets killed during the capture and she is left alone? She decides to give a visit to Amy and Dan Cahill, whom she saw a couple of years ago when they visited her home. There is a reunion in Grace's mansion. All the yo...