Kidnapper/Hostage Contract

A Topeka, Kansas couple is being sued for breach of contract by their former kidnapper. The man, who is serving time for the kidnapping and other crimes, claims that the couple broke an oral contract to hide him in return for money by escaping and calling police once he fell asleep. Because, you know, the knife he was was holding on them had nothing at all to due with them agreeing to whatever he said. The phrase 'under duress' comes fight to mind.