THE FLASH
CW, 8:00 p.m. ET
For the third day in a row, the CW is presenting a continuing, connected story line on one of its DC Comics series from ubiquitous executive producer Greg Berlanti. It’s called “Crisis on Infinite Earths,” and the CW seems to have an infinite number of alternate shows on which to present it. Sunday, it was Supergirl. Yesterday, it was Batwoman. And today, it’s The Flash.