Johnny and Fergie are worried. Professor Childermass has been acting weird. Very weird. In this sixth Johnny Dixon mystery, the two boys sneak over to the professor's house to investigate, and what they find in the process is more amazing than usual: a talking statue, the ghosts of long-dead Crusaders, and a rickety old trolley that turns out to be a time machine. Soon, our three heroes have traveled back to Constantinople in 1453. The Turks are invading and Professor Childermass has taken it upon himself to save the people trapped in the Church of Holy Wisdom. Johnny and Fergie must stop...

The Face in the Frost is a fantasy classic, defying categorization with its richly imaginative story of two separate kingdoms of wizards, stymied by a power that is beyond their control. A tall, skinny misfit of a wizard named Prospero lives in the Southern Kingdom-a patchwork of feuding duchies and small manors, all loosely loyal to one figurehead king. Both Prospero and an improbable adventurer named Roger Bacon look in mirrors to see different times and places, which greatly affects their personalities and mannerisms and leads them into a myriad of situations that are sometimes frightening...

When Dr. Charles Coote-a noted folklorist and old friend of Professor Childermass-returns from a conference in New Orleans, he brings home a small, sinister drum. It's made entirely of black wood with red leather straps and small, white bones. Nobody takes Dr. Coote's worries about the drum very seriously, until Fergie taps it a few times and releases an unspeakable evil. Suddenly, Johnny and Fergie and the professor find themselves battling the imposing Madame Sinestra, a voodoo priestess who seeks the magical drum for her evil Caribbean cult. Spells, zombies, and voodoo demons beset our...

Professor Childermass's brother Peregrine has left behind a huge inheritance-a mansion, ten million dollars, and a cryptic riddle that might save the world from a madman. The only catch is that the professor must stay on the estate up in Maine for the entire summer. Johnny Dixon and his friend Fergie decide to come along to keep the professor company, but little do they know the dangerous magic that awaits them there. As they try to decode the strange rhyme in Peregrine's will, a powerful force is circling ever closer. Will they solve the mystery in time? Will the madman stay one step ahead...