Charlotte saw herself as the ideal wife, 32 and still turning heads with her long auburn hair, toned body from yoga and Pilates, and a smile that put people at ease. Her green eyes reflected her kind nature. Married to Mark for eight years, their suburban life was solid: a comfortable house with a picket fence, a backyard garden, barbecues with neighbors, and sex that was steady if not explosive. Mark, 35, a marketing exe...