Tori loves living on Zoo Lane with her family. Who else gets to live at a zoo--and with her cousin Sumiko visiting from Tokyo soon, this is shaping up to be the best summer ever!

But when rumors of a missing animal start to spread, Tori wants to help . . . except she doesn't know which creature is on the loose. An ostrich? A little frog? There's also a strange noise coming from her backyard. It almost sounds like someone is calling her name! Tori is on the case.

In this second book in the illustrated Mysteries on Zoo Lane series, two-time Newbery Honor author Patricia Reilly Giff has crafted a charming story about conservation, animal care, friendship, and problem-solving. In touch with the programs and initiatives that today's zoos are undertaking, Giff provides readers with a fresh look at the work of zoologists. Charming line artwork by Abby Carter appears throughout and keeps the story upbeat.