Evanescent

Twelve knows only one life—the Institute. As part of an elite group of assassins, she is trained to kill and follow orders. Her lifelong dream is of freedom, and she would risk everything to make it come true.

When she is sent as a spy to a penal colony, aptly named New Alcatraz, her dreams of freedom take a nose-dive. She is now trapped in a nightmare as the only female staff member on a planet known for its harsh environment and a prison from which there is no escape.

Help comes from an unexpected source, but can Twelve and her cohort pull off the scheme when the odds of trying could mean certain death?