Lockout by Maya Cross

Sophia had never felt attraction like that before. Raw. Electric. Irresistible. Swept off her feet by the dashing, enigmatic billionaire Sebastian Lock, she was taken on a journey of self-discovery, taken to places she never dreamed she'd go.
But things are never as simple as they appear. Sophia's trust is a fragile thing, and Sebastian seems insistent on testing it. He has his own demons to battle, and nobody has brought them to the fore like she has.
As their relationship deepens, and Sophia begins to break down his walls, all that greets her are more questions. Why is Sebastian fighting so hard to keep her at a distance? Who is the girl on the background of his phone? And why does the strange tattoo on his chest seem so familiar?
These puzzles plague her, but as Sebastian's mysteries begin to unravel, she must face an entirely different truth. Staying in the dark may be painful, but finding the answers could be deadly.

This book is part of the "The Alpha Group" series.
Here are some other books from this series: