“Polka Dots and Moonbeams” by Jeffrey Ford (2011) from Stories edited by Neil Gaiman and Al Sarrantonio, Harper Perennial

An infinite loop of noir wherein Dex takes Adeline on a date in his Belvedere to visit a nightclub in the desert with plans afterward to watch the stars fall.  There is a fez capped maître d', a shark toothed professor, guns and murder and promises of a solution.