Victor Appleton 
Under the Radar [EPUB ebook] 

Tom will test the limits of science to save his family! Tom and his dad are in the park testing out Toms new invisibility suit when suddenly a van pulls upand kidnaps Mr. Swift! Tom is panicked: who would want to abduct his father? A strategy meeting is held and the FBI is called. But things get tricky when it looks like the kidnapping was an inside operation. Despite the FBIs insistence that Tom stay out of the investigation, Tom and his sister, Sandy, are determined to find their fatherand whoever is responsible for taking him, whether its TRB, their rivals at FUG, or even the FBI itself!