The Methuselah Method

Marigold "Goldie" Robbins is a vivacious and energetic sixty-six-year-old. Recently widowed and plagued with loneliness, she yearns for the companionship and romanticism she experienced as a younger woman. One day, while working out at her fitness center, Goldie meets a handsome, charismatic man who makes her feel young and desirable again. Despite the difference in their ages, Goldie quickly succumbs to his seductive charm and throws caution to the winds. She leaves the fitness center in the company of the mysterious stranger and later vanishes without a trace.
Barbara Ross, Goldie's lifelong best friend, initially tries to convince herself that Goldie impulsively slipped away for a romantic rendezvous with a man she met on one of the Internet sites she recently had been visiting. All the while, a fear that her friend may have fallen victim to an Internet predator niggled at the back of her mind. Barbara's fears are intensified when she receives an e-mail, ostensibly from Goldie, claiming that she is enjoying a clandestine romantic getaway. Barbara recognizes instantly that the e-mail is filled with cryptic messages and misinformation - surely a cry for help from Goldie.
As police conduct an investigation into the disappearance, it soon becomes apparent that Goldie has been abducted and that her life may be in jeopardy. As more and more alarming facts are uncovered, the authorities realize that the motive for Goldie's abduction is far more sinister than they could ever have imagined. Using every tool at their disposal, the police race against time to find Goldie before it is too late.