Mary Winkler was a dutiful evangelical preacher's wife . . . until she shot him.  The motive seemed mysterious until investigators revealed that she had lost most of their money in the Nigerian internet scam. 

At trial, though, she has testified that the real reason for the killing was spousal abuse.  Part of what set her off:  being forced to wear "slutty" clothes.

On the witness stand in front of Winkler was an extremely high white platform shoe and a wig she said her husband bought for her to wear during sex. She blushed crimson, bowed her head and cast her eyes downward when she talked about the items.