One: Lydia is dead. But they don't know this yet.

1977, May 3, six thirty in the morning, no one knows anything but this innocuous fact: Lydia is late for breakfast.

As always, next to her cereal bowl, her mother has placed a sharpened pencil and Lydia's physics homework, six problems flagged with small ticks.

Driving to work, Lydia's father nudges the dial toward WXKP, Northwest Ohio's Best News Source, vexed by the crackles of static.

On the stairs, Lydia's brother yawns, still twined in the tail end of his dream.

And in her chair in the corner of the kitchen, Lydia's sister hunches moon-eyed over her cornflakes, sucking them to pieces one by one, waiting for Lydia to appear.

It's she who says, at last, "Lydia's taking a long time today." Upstairs, Marilyn opens her daughter's door and sees the bed unslept in: neat hospital corners still pleated beneath the comforter, pillow still fluffed and convex.

Nothing seems out of place.

Mustard-colored corduroys tangled on the floor, a single rainbow-striped sock.

A row of science fair ribbons on the wall, a postcard of Einstein.