Hollow Earth

Matt and Emily Calder are Animare—powerful beings who can draw things into life and travel through pictures. Now someone wants to use their abilities to free the dangerous creatures imprisoned in Hollow Earth and rule the world in this fantastical middle grade series.

Latest Book in Series

Matt and Emily Calder’s travels through time come to a thrilling conclusion in the third book of the Hollow Earth trilogy as the siblings struggle to close Hollow Earth—and keep the monsters inside.

Twins Matt and Emily Calder may be divided by time, but they are united in their mission to close...

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