In a play by this author, the art dealer Ernest Friedman declares he could “never understand this disgusting three-sided erotic hotch-potch” after finding his wife with a pair of characters originally played by this author and his friend Alfred Lunt. That play by this author depicts the bisexual love triangle of Gilda, Otto, and Leo (-5[1])and is titled Design (15[1])for Living. A character in another play by (15[1])this author (15[1])who is called “feckless, irresponsible, and morally unstable” torments another character with a (*) floating vase and is summoned by Irving (10[2])Berlin’s (10[3]-5[1])song (10[4])“Always.” (10[10])In that play by this author, Ruth is killed in a car crash (10[1])after Madame Arcati (10[2])conducts a (10[1])séance (-5[1])which inadvertently summons Charles Condomine’s (10[1])deceased wife Elvira. For 10 points, name this British playwright (10[1])of Blithe (10[2]-5[1])Spirit. (10[2])■END■ (10[6]0[10])