This thread brings to mind a good CSI episode I watched lately. A bigamist got caught because he helped a child in one of his two families, both of whom lived in Las Vegas, build an erupting volcano for a science fair project. The guy was VERY unhandy, but watched the wife in marriage #1 help out the daughter do the volcano project. He took mental notes and assisted the child in family #2 do the same project. If I recall correctly, the CSIs found the "eruption" ingrediants and wife #1 finally figured out why hubby was "away on business" so much.
