It looks like things are about to get mighty troublesome in Central City in the upcoming episode, “Power Outage”.
Barry Allen encounters a meta-human with the ability to feed off the power of others, therefore incapacitating his speed. And without it? Well, as Cisco says… he runs pretty slow for a normal guy!
http://www.youtube.com/watch?v=2vTonPNAKOM
This episode will also feature the first major sneak peek for THE FLASH/ARROW Crossover special starting December 2nd, so be sure to tune on Tuesday at 8pm ET/ 7pm CT on The CW!