Schedule for Wednesday May 20, 2015

Today on q:  (1) In the lead up to the final episode of the Late Show with David Letterman, Shad checks in with longtime staff writer Tom Ruprecht. (2) Why Doug Fishbone planted a fake in the Dulwich Picture Gallery (3) California folk duo The Milk Carton Kids perform live in studio q (4) Director Michael McGowan on Between, his new Netflix drama that imagines a world in which all adults have been wiped out.