[caption id="attachment_39237" align="alignnone" width="725"] Agents Of S.H.I.E.L.D.[/caption] Agents of S.H.I.E.L.D. finally returned tonight as the show kicked off its fourth and hot season. After the season premiere, titled "The Ghost", ABC aired a brief trailer for next week's episode that is all about the new mysterious boss of S.H.I.E.L.D., played by Jason O'Mara, whose identity still remains a secret, which is why you better tune in next week! You can check out the trailer below along with the official synopsis and promotional photos from ABC. Heads up: be aware of some potential spoilers - you have officially been warned. https://www.youtube.com/watch?v=ICfSaUpORpg "DAISY GOES TO BATTLE GHOST RIDER AT A TERRIBLE COST, AND COULSON FACES THE NEW DIRECTOR, ON ‘MARVEL’S AGENTS OF S.H.I.E.L.D.’ ON ABC “Meet the New Boss” – Daisy goes to battle Ghost Rider at a terrible cost, and Coulson faces the new Director, and his bold agenda surprises them all, on “Marvel’s Agents of S.H.I.E.L.D.,” TUESDAY, SEPTEMBER 27 (10:00-11:00 p.m. EDT), on the ABC Television Network. “Marvel’s Agents of S.H.I.E.L.D.” stars Clark Gregg as Agent Phil Coulson, Ming-Na Wen as Agent Melinda May, Chloe Bennet as Daisy Johnson, Iain De Caestecker as Agent Leo Fitz, Elizabeth Henstridge as Agent Jemma Simmons and Henry Simmons as Agent Alphonso “Mack” MacKenzie. Guest starring are Jason O’Mara as the Director, Gabriel Luna as Robbie Reyes, Briana Venskus as Agent Piper, Nico David as boy, John Churchill as father, Adrian Quinonez as Ignacio, Jen Kuo Sung as Chen, Daniel Zacapa as Canelo, Lilli Birdsell as Lucy, Dan Donohue as Frederick, Ward Roberts as Hugo, Usman Ally as Vincent, Deren Tadlock as armed S.H.I.E.L.D. guard and Mark Daneri as Wisconsin congressman. “Meet the New Boss” was written by Drew Z. Greenberg and directed by Vincent Misiano." Agents of S.H.I.E.L.D. Season 4 airs on Tuesday nights at 10/9c on ABC. Photos via ABC.