"The estranged best friend of a missing heiress races to unravel the secrets behind her disappearance-with the only clues left behind in a manuscript detailing her possible last days-in this gripping psychological thriller. Abby and Gia have been friends since they were thirteen, when Abby's mom came to work for Gia's billionaire family as a chef. Five years later, the two were forever bound by tragedy when Gia saved Abby from an attack by Gia's stalker,...