In the photo, Agnes Long looks drop-dead gorgeous. She’s on vacation at the Jersey shore with her husband. He is tall, tan and trim; she wears a zebra-stripe bikini, a floppy hat and sunglasses. The sea breeze has blown her platinum hair across her face and she is smiling. The picture says it all. In the mid-1970s, Agnes Long was a happily married, affluent, middle-aged woman with three children and a weakness for expensive clothes.