A once-respected crime lab chemist goes on trial in...

A once-respected crime lab chemist goes on trial in West Virginia for alleged fraud. Fred Zain, a crime lab chemist faces 5 felony fraud charges for accepting a salary and benefits in West Virginia while allegedly failing to correctly perform his duties.Authorities now say that much of what Zain's testimony was questionable at best, or outright lies at worst. In fact, no one knows precisely how many convictions came of Zain's testimony, or how many people are still imprisoned in West Virginia, Texas and the 10 other states where he served as a consultant. But Jim Lees, who led a 1990s investigation into Zain's work, said Zain testified in "hundreds and hundreds, if not thousands" of murder and sexual assault cases.The Zain story is similar to an Oklahoma case involving now-disgraced police chemist Joyce Gilchrist.