Watch The Flash 4×21 Promo “Harry and the Harrisons”

The promo for the new episode of The Flash has been released. This new episode is titled “Harry and the Harrisons” and it will air on May 8.

In this new episode, “With DeVoe’s Enlightenment device nearly complete, in order to disable it The Flash (Grant Gustin) and his team must put their faith in an unlikely ally – Amunet Black (guest star Kattee Sackhoff). Meanwhile, Harry (Tom Cavanagh) hits an all-time low when the ‘Council of Wells; kicks him out but then Cisco (Carlos Valdes) introduces him to the ‘Council of Harrisons.'”

Source: The CW