Since it’s debut on Broadway in 2013, the musical After Midnight has been a popular revue across the country, with its latest production currently taking stage at the Fifth Avenue Theatre through this weekend. It’s unlike anything I’ve seen on stage before, and it’s well, well worth your time and attention. This is the second successive production at the Fifth Avenue that I’ve reviewed after the immensely fun Bye Bye Birdie, and both are unqualified successes.