When Ultraviolet returns to Central City, Allegra is determined to find her cousin and change her heart; Joe finds evidence that Kristen Kramer may not be the good cop she appears to be.
Stars: Grant Gustin, Candice Patton, Danielle Panabaker
Director(s): Danielle Panabaker
Writer(s): Greg Berlanti, Andrew Kreisberg, Geoff Johns