"When the missing button for their new apartment building's thirteenth floor suddenly appears, identical twins Mal and Colm are pulled into an eerie adventure in an parallel dimension"-- Provided by publisher.
269 pages : illustrations ; 22 cm
Includes an excerpt from: The matchstick castle.
Subjects:Adventure and adventurers -- Fiction.
Apartment houses -- Fiction.
Blessing and cursing -- Fiction.
Blessing and cursing -- Juvenile fiction.
Brothers -- Fiction.
Brothers -- Juvenile fiction.
Dwellings -- Juvenile fiction.
Single-parent families -- Fiction.
Single-parent families -- Juvenile fiction.
Supernatural -- Fiction.
Twins -- Fiction.
Twins -- Juvenile fiction.
Genre:Action and adventure fiction.