\"Blithe Spirit,\" featuring the story of a man whose neatly arranged life is turned upside down when his first wife returns from the dead, is featured at Wayne State's. The play continues through Dec. 11. \"Mother Courage and her Children,\" featuring a woman trying to prosper from the war who loses her children, opens Friday at the Hilberry Theatre. \"The Merry Wives of Windsor,\" featuring Shakespeare\'s play about a man whose schemes land him in trouble, is playing at the Hilberry Theatre. The play continues through Dec. 18.