Sentence:  It was paired with a Darius Milhaud opera , `` The Poor Sailor '' , set to a libretto by Jean Cocteau , a kind of Grand Guignol by the sea , a sailor returns , unrecognized , and gets <WSD>done</WSD> in by his wife . 
Meaning of the word marked with <WSD> tags:  get rid of (someone who may be a threat) by killing