Paula Blais Gorgas
This book can be downloaded and read in iBooks on your Mac or iOS device.
When Jenna enters an abandoned old house, she is transported to an alternate world called EARTH ONE. There she meets Master Sorcerer Nigel, his young friends, and a telepathic cat named Victor. But a perilous encounter with a sorcerer from yet another alternate world threatens to change Jenna's life forever. [OWFI's Best Juvenile Book of 2002]