Double your phantom, double your fun, two masks always are better than one. Complete with mystical lake and crashing chandelier, the Andrew Lloyd Webber version of The Phantom of the Opera (left) returns to Chicago (yet again), this time to the Cadillac Palace Theatre, through January 5; 312-902-1400; $28-$85. Meanwhile, Porchlight Music Theatre continues its run of a rival musical version, Phantom, by American authors Maury Yeston and Arthur Kopit. At Theatre Building Chicago through Nov. 11; 773-327-5252; $34-$35. For spectacle go Downtown, although you won’t learn the Phantom’s name or how he came to be a seductive but murderous musical maniac. For that back story, take in the Yeston/Kopit version. Photo by Carol Rosegg