Changes

|summary=No genre is off limits for this ambitious and zealous co author team. They produce an imaginative and exhausting tour de force as they unleash a plethora of settings courtesy of their fictional author construct Denver Kristoff. The book bursts with cinematic set pieces with each scene vying to top the scene before it and cliff-hangers galore. It differs from Book one because Columbus and Vizzini make a good attempt at lifting their characters from basic stereotypes by giving the Walker siblings fully blooded ambitions and tempting choices. A movie franchise beckons.

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In ''House of Secrets'' Cordelia, Brendan and Eleanor experienced a Goonie-like ordeal battling pirates and skeletons with a vengeful witch thrown in for good measure. At the beginning of ''Battle of the Beasts'' the intrepid teens are dealing with problems at home and school. Suddenly, they are once again separated from their parents as the eerie Kristoff House magically transports them ''Wizard of Oz'' style and they are not in 'Kansas' (in this case San Francisco) anymore but inside the dangerous fictional labyrinth of Denver Kristoff. As they struggle to navigate their new surroundings, they are pursued by Kristoff’s megalomaniac daughter Dahlia. Thrust into the gladiatorial savagery of ancient Rome, they hardly have time to catch their breath before they are confronted by Nazi cyborgs and frost beasts.