The 100-Year-Old Secret
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Sherlock Holmes's great-great-great-grandkids use modern technology to crack his unsolved cases—like the mystery of a vanished painting—in this series debut.
"A fast-paced, entertaining mystery." —Booklist
Xena and Xander Holmes think living in London will be boring. But one afternoon, they're handed a cryptic note that leads them to a hidden room—and a secret society. When they discover they're related to Sherlock Holmes and inherit his unsolved casebook, life becomes so much more exciting. ...























