“Bring me the Flash — or else your city falls.” Yeah, that’s ominous. Here is the trailer for Season 4 of The Flash that was shown to the Comic-Con crowd today in San Diego. It shows a very different Team Flash, led by Iris West (Candice Patton) in the Cortex and Cisco and Wally (Carlos Valdes, Keiynan Lonsdale) in the streets.