It's an amazing literary experience brought to us by Lauren DeStefano.

In Wither, the author explores an scenario where nothing is as it used to be. After genetic mutations made in order to extinguish epidemic diseases, the humanity is punished with an threaten of extintion caused by a misterious virus that reaps young lives, mens at the age of 25 and girls at 20; In order to protect humanity from extinguishment, young girls are daily kidnapped and forced into polygamous marriages.
When the 16 years old Rhine Ellery is taken by the Colectors in order to become a bride, she gets into a world of wealth and privilege. Even with the true love of her new husband, Linden, and the tenuous confidence between his others wives, Rhine has a purpose: To break free in order to find her twin bother and go home. But Rhine has more things to deal with than the loss of her liberty. Linden's excentric father is obsessed about finding a cure for the genetic virus that slowly approaches his son, even if it means collecting corpses to test his experiments. Counting on the support of Gabriel, a servant on which she puts her trust, Rhine tries to gain back her liberty in the little time of life she has left.