The Watchdogs Debut in New "Agents of SHIELD" Photos, Synopsis

ABC has released new "Agents of S.H.I.E.L.D." photos and the episode synopsis for "Watchdogs," featuring the debut of Mack's brother, Ruben (Gaius Charles).

MARVEL'S AGENTS OF S.H.I.E.L.D. - "Watchdogs" - When a radical group called The Watchdogs emerges with plans to eliminate the Inhumans, Agent Mack and his brother become caught in the crossfire. Meanwhile, Simmons discovers a powerful chemical compound that could alter the future for Inhumans, on "Marvel's Agents of S.H.I.E.L.D.," TUESDAY, MARCH 29 (9:00-10:00 p.m. EDT) on the ABC Television Network. (ABC/Kelsey McNeal)

"Watchdogs" airs Tuesday, March 29 at p p.m on ABC.

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