"Caged"
*The Cage Factory bring a drugged Grodd to Iron Heights, provoking Kenyon along the way, as it's not a union employer. Grodd is sprung by Magenta and proceeds to cause mass chaos and destruction in the centre of Keystone, all this while still under the influence of heavy sedatives. Luckily, the Flash is on hand to minimize loss of life and to recapture Grodd. Warden Wolfe of Iron Heights arrives to take the unconscious Grodd to his cell, telling Flash as he does so that Piper has been arrested for (and confessed to) the murder of his parents. *Source: dcuguide.com