The Society (en Inglés) - Lilith Saintcrow

The black-ops government agency called Sigma broke Justin Delgado, trained his psionic talent and turned him into a killer. Then he escaped and joined the Society, an underground resistance movement of psions determined to use their talents to bring Sigma down. Feared even by his own teammates, hunted by the government, and too damaged to feel anything but clinical rage, he is utterly alone-until he meets Rowan.

When Rowan Price stumbles across Delgado's team in an abandoned house, he is assigned to make contact with her, bring her in, and keep her alive-because Rowan is one of the most powerful psychics the resistance has ever encountered. If the government gets its hands on her, she could very well mean the downfall of the resistance, because nobody, not even Rowan, is quite sure how far her talents extend or how powerful she could eventually become.

Unfortunately, there's a traitor buried in the ranks of the resistance, ready to betray everything the Society has worked so hard to achieve. If the Society goes down, Rowan is at risk. God alone knows what Delgado will do to keep her safe, because Rowan is fast becoming the only thing in the world he cares about...