The Whole Truth - Supercharged Files, #1

A human lie detector is hired to unmask a mole but discovers her powers can't protect her when even the bad guys are superpowered. Cleopatra Giancarlo is different from your average twenty something career girl. For one thing, she knows when people lie because she can see the truth in their shadows. For another, she doesn't use her power for good. Or evil. After repeated failures to help others, she mostly just uses it to get deals at Bloomingdale's.
She fears what the government would do if they discovered her ability, yet she longs to find out if there are people like her out there. If there's anything more she could be. She gets her wish when two strangers whisk her away from her old life and introduce her to the world of suprasensors. John and Samantha represent an organization called YuriCorp, one of many privately-owned firms that employ supras to increase their profit margin.
Any of these firms would be thrilled to have Cleo on staff, and their methods of recruitment aren't always friendly. But even in the world of supras, Cleo isn't safe. Her new boss wants her to go undercover and seek traitors in the company ranks. Her new friends know what she can do and how to work around it. And when someone starts wiping out supras, her new assignment might end up with her in a coma-or worse.