A TERRORIST ACT REVEALS A NEW ADVERSARY, ON "MARVEL'S AGENTS OF S.H.I.E.L.D." ON ABC

"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.

"Marvel's Agents of S.H.I.E.L.D." stars Clark Gregg as Director Phil Coulson, Ming-Na Wen as Agent Melinda May, Brett Dalton as Grant Ward, Chloe Bennet as Agent Daisy Johnson, Iain De Caestecker as Agent Leo Fitz, Elizabeth Henstridge as Agent Jemma Simmons, Nick Blood as Agent Lance Hunter, Adrianne Palicki as Agent Bobbi Morse, Henry Simmons as Agent Alphonso "Mack" MacKenzie and Luke Mitchell as Lincoln Campbell.

Guest starring are Titus Welliver as Felix Blake, Mark Dacascos as Giyera, Gaius Charles as Ruben Mackenzie, Trenton Rostedt as Dallas Wyatt, Justin Morck as Watchdog Alpha, Jonathan Camp as Watchdog Oscar and D. Elliot Woods as Watchdog Victor.

"Watchdogs" was written by Drew Z. Greenberg and directed by Jesse Bochco.

"Marvel's Agents of S.H.I.E.L.D." is broadcast in 720 Progressive (720P), ABC's selected HDTV format with a 5.1 channel surround sound. A TV parental guideline will be assigned closer to the airdate.