The Girl Who Could Walk Through Walls

When Kitty and her father, Arthur Conway, disappear under suspicious circumstances, it is up to their friends, Paul and Charles to uncover a sinister plot before it is too late. Can Kitty and her father survive long enough for their friends to find them? Can Paul and Charles save the Conways when they find themselves in the middle of the plot?
Read The Girl Who Could Walk Through Walls to find out.