ISBN-13: 9781495375309 / Grecki / Miękka / 2014 / 374 str.
The epic adventure of two children, Marc and Louisa, in the World of Thrylia. Dame Mandragyne summons Louisa back to Thrylia because the World is being destroyed by and intruder. Meanwhile, Marc has disappeared, thus Louisa must also find him, before Thrylia's destruction.