Dave and Lee-Ann Luke had made it — at least in the eyes of the world. They were financially sound, had five children out of diapers and were on their home stretch to becoming empty nesters. With Krista, 21; Davie, 19; Spencer, 17; Ruthie, 13; and Zane, 9, many would say the Lukes had done their part.
But one night in 2005, while the couple was walking up the stairs of their Arizona home, they realized something might be missing.