From best-selling author Iris Johansen is the gripping, action-packed crime drama, What Doesn't Kill You. The novel features femme fatale Catherine Ling, a character Johansen first introduced in 2010's Chasing the Night.

In Chasing the Night, we follow Ling, a CIA agent, as she continues her eight-year struggle to find her son, the victim of a kidnapping when he was only two. Her friends, family, and colleagues tell her to let go, move on, and accept that her son is never coming back, but Ling refuses. Instead, she finds help in Eve Duncan, a forensic sculptor whose own parental nightmare, the disappearance of her daughter, has engulfed her in a similar obsession.

Together, the women endure the worst fear any mother can imagine. Without question, Chasing the Night is a gut-wrenching thrill-ride into the darkest places of the soul.

In What Doesn't Kill You, Johansen continues her exploration of Ling's skills and psyche by going deeper into her background. Abandoned on the streets of Hong Kong at age four, Ling was schooled in the art of survival, and she traded in the only commodity she had: information. As a teenager, Ling came under the tutelage of a mysterious man known only as Hu Chang, a skilled assassin and master poisoner.

With such a deadly and anonymous background, the CIA recruits Ling and trains her to become one of their most effective operatives. However, having lived life in the shadows, Ling is aware of the wobbly moral compass of her existence. She's even more aware of how expendable she is to the shadowy power brokers Ling deals with.

When her old friend Hu Chang creates an incredibly deadly and completely untraceable poison, the chase is on to be the first to get it. With rogue operative John Gallo also on the hunt, Ling finds herself pitted against a group so villainous and a man so evil that she may not survive the quest to protect those she cares about.

No doubt about it, What Doesn't Kill You showcases Iris Johansen at her page-turning best.

Iris Johansen is the best-selling author of Pandora's Daughter, Stalemate, Killer Dreams, On the Run, and many more. Her latest novel, What Doesn't Kill You, is also a best-selling thriller, and Johansen has already announced plans to bring Catherine Ling back in future books.