John Diggle arrives in Central City with a weapon to help Barry stop the Godspeed War. Meanwhile, Allegra and Ultraviolet's new bond is put to the ultimate test, while Joe and Kristin Kramer are hunted by a former colleague of hers.

Alexa Barajas, Carmen Moore, Christian Magby, David Ramsey, Jessica Parker Kennedy, Jordan Fisher, Julian Black Antelope, Karan Oberoi, Meena Mann, Rick D. Wasserman