David Baldacci Atlee Pine Series 4 Books Collection Set (Long Road to Mercy, A Minute to Midnight, Daylight, Mercy):

Long Road to Mercy:
FBI Special Agent Atlee Pine has learnt three lessons in life:Some wounds never heal.Atlees twin sister, Mercy, was abducted from their bedroom over thirty years ago, and Atlee has spent every day since wondering what happened to her. Time doesnt lessen your pain.

A Minute to Midnight:
Without Mercy.At six years old, Atlees twin sister, Mercy, was taken from the family home while Atlee was left for dead. Since that fateful night, Atlee has dedicated her life and career to catching those who hurt others.Word of a killer.Atlee has never stopped searching for answers about her sister.

Daylight:
The hunt. Ever since Mercy was abducted aged six, Atlee has been relentless in her search for her. Finally, she gets her most promising breakthrough yet the identity of her sisters kidnapper. The capture. As Atlee and her assistant, Carol Blum, race to track down the suspect, they run into Pines old friend and fellow agent, John Puller, who is investigating the suspects family for another crime.

Mercy:
FBI agent Atlee Pine is at the end of her long journey to discover what happened to her twin sister, Mercy, who was abducted when the girls were just six years old an incident which destroyed her family and left Atlee physically and mentally scarred. She knew her sister and parents were out there somewhere. And she had to find them. Dead or alive.