Honest woman

Bob said he’d make an honest woman out of Sally.
So, he and his CIA buddies grabbed her off the street, stuffed her in a white van, and drove her to an interrogation center.
Her answers were vague, and the high-speed camera caught microexpressions in her forehead that suggested she wasn’t telling the truth.
Polygraphs are stress-dectectors, not truth-detectors, but the interrogator used it to catch Sally off of her guard.
Another session on sodium pentathol confirmed the results.
“She’s no good for you, Bob,” said the interrogator.
Bob called off the wedding, and dumped Sally’s body in the bay.