It seems like everyone has at least heard of Serial, the murder mystery podcast from the creators of This American Life. While I prefer listening to RuPaul: What’s The Tee?, I, too, have become a podcast addict. And some podcasts are so successful they even tour the country. Welcome to Night Vale — a twice-monthly story about the spooky small desert town of Night Vale — comes to the Taft Theatre for a special cast performance featuring British singer/songwriter Mary Epworth. 8 p.m. Wednesday. $27.50. Taft Theatre, 317 E. Fifth St., Downtown, tafttheatre.org.