Grace couldn't call the police yet. She couldn't sleep either. The computer was still on. Their screen saver was a family photo taken last year at Disney World. The four of them posed with Goofy at Epcot Center. Jack was wearing mouse ears. His grin was ear to ear. Hers was more reserved. She'd felt silly, which just encouraged Jack. She touched the mouse-the other mouse, the computer mouse-and her family disappeared.

Grace clicked the new icon and the strange photograph of the five college-aged kids appeared. The image came up with Adobe Photo-shop. For several minutes Grace just stared at the young faces, searching for-she didn't know-a clue maybe. Nothing came to her. She cropped each face, blowing them up into something approaching four inches by four inches. Any bigger and the already-blurred image became undecipherable. The good paper was in the color inkjet, so she hit the print button. She grabbed a pair of scissors and went to work.

Soon she had five separate headshots, one for each person in the picture. She studied them again, this time taking extra care with the young blonde next to Jack. She was pretty with that girl-next-door complexion and long flaxen hair. The young woman's eyes were on Jack, and the look was more than casual. Grace felt a pang of, what, jealousy? How bizarre. Who was this woman? Obviously an old girlfriend-one Jack had never mentioned. But so what? Grace had a past. So did Jack. Why would the look in that photograph bother her?

So what now?

She would have to wait for Jack. When he came home, she would demand answers.

But answers about what?

Back up here a second. What was really going on? An old photograph, probably of Jack, had popped up in her packet of pictures. It was weird, sure. It was even a little creepy, what with the blonde crossed out like that. And Jack had stayed out late before without calling. So really, what was the big deal here? Something in the photo had probably upset him. He turned off his phone and was probably in a bar. Or at Dan's house. This whole thing was probably just a bizarre joke.

Yeah, Grace, sure. A joke. Like the one about the carpool to the pool.

Sitting alone, the room dark except for the glow from the computer monitor, Grace tried a few more ways to rationalize away what was going on. She stopped when she realized that this was only scaring her more.

Grace clicked onto the face of the young woman, the one who stared at her husband with longing, zooming in for a better view. She stared at the face, really stared, and a tingle of dread began to travel across her scalp. Grace did not move. She just kept looking at the woman's face. She didn't know the wheres or whens or hows, but she now realized something with thudding certainty.

Grace had seen this young woman before.