ABC/Marvel series Agents of S.H.I.E.L.D.. It aired on March 29, 2016."Watchdogs" is the fifty-eighth episode of the
When a radical group called the Watchdogs emerges with plans to eliminate the Inhumans, Mack and his brother Ruben become caught in the crossfire. Meanwhile, Simmons discovers a powerful chemical compound that could alter the future for Inhumans.