Code Name: Silence
By Kirstin van Dyke
Published: May 1, 2012.
Kathy Allen has a talent no one else has - she can walk through walls! While she her friends are gifted with superpowers, they aren’t superheroes. All they have now is a dream of using their powers to fight crime.
When a masked theif, code named "Silence", proves too stealthy to be caught by normal people, Kathy's dream is given a chance to become reality - but it quickly becomes a nightmare.