Wither by Lauren DeStefano

Years down the road, science has taken genetic engineering to the next level.  Scientist have completely eliminated cancer.  In doing so, they have created a new problem.  When the first generation of genetically engineered people start having their own babies, there is a very rigid time limit on their lives.  Girls live to age 20 before getting the virus, boys live to 25.  In an effort to create a legacy, the men in the wealthy class marry multiple wives.  These girls are kidnapped from all over the streets of North America, the last continent.  Rhine is taken from her twin brother during what she thinks is an interview.  She is brought to a beautiful mansion and is married to her new husband, Linden.  Linden's father is a scientist, and after Rhine accidentally ends up in the basement of the mansion after Linden's first wive dies, she discovers that her new father in law is up to some very scary experiments.  She vows to herself that she will escape.  This book is top notch, but definitely for a more mature reader.  Think The Handmaid's Tale.