The Sherlock Files #3 The Case That Time Forgot by Tracy Barrett*

My fourth grader is really enjoying this series.
Xander and Xena Holmes, relatives of the late Sherlock Holmes, have been given the privilege of solving cases from Sherlock Holmes casebook.  In this book they are searching for an Egyptian amulet that has the power to turn back time only one day every hundred years.
-Borrowed from the library.
*Highly recommend.