Agatha Mystery. Book 4. Theft at Niagara Falls

Gifted with remarkable intuition and a phenomenal memory, Agatha Mystery dreams of becoming a writer. But that is in the future; for now, she is simply an excellent detective! Together with her unlucky brother Larry, a student at a detective school, she travels the world to solve the most convoluted mysteries. They are aided by a devoted butler, a mischievous Siberian cat, and a multitude of quirky relatives.

Theft at Niagara Falls.
At a luxurious hotel overlooking Niagara Falls, an extraordinary incident occurred: a Canadian thief robbed the safe of a famous singer and fled with jewels worth unimaginable amounts of money. Only the young detectives with the last name Mystery can solve this daring crime!