Author and musical theatre librettist Stephen Cole has taken his real-life friendships with Ethel Merman and Mary Martin, the two undisputed queens of Broadway, tossed them into a blender and come up with a fantasy about a nerdy super-fan in the early 1980s who, while visiting his dying idol Ethel Merman, stumbles into a time portal in her closet and exits on the other side in Sophie Tucker's star dressing room at the Imperial Theatre in 1939. Mikey...