The Good Children — Kate Wilhelm

It started with a promise. A pact. It became a secret that no one must tell--that their parents were dead and gone. Including the one they'd buried in the backyard.

Now the McNair children are growing older, discovering love, college, careers. But their lie haunts them. Their home holds them captive. Only the horrifying truth of their mother's death can set the children free. And only the truth can destroy them all. . . .