In the midst of Life Model Decoys and a robot, anti-Inhuman uprising, fan-favorite guest actor Patton Oswalt is finally returning to "Marvel's Agents of S.H.I.E.L.D." His return comes just after the startling revelation that the S.H.I.E.L.D. base was infiltrated by a robot version of Doctor Radcliffe.

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According to this new promo for next week's episode titled "Hot Potato Soup," Coulson has handed the mysterious Darkhold book off to one of the Koenig brothers. When Radcliffe, Senator Nadeer, and the Watchdogs discover the Koenig brothers have the book, they begin an interrogation. Did Coulson make the right choice in entrusting the Darkhold to them?

THE KOENIGS ARE BACK, AND THE FATE OF THE WORLD IS IN THEIR HANDS,  ON ABC’S ‘MARVEL’S AGENTS OF S.H.I.E.L.D.’ Patton Oswalt Returns as the Koenigs “Hot Potato Soup” – Agents Sam and Billy Koenig (Patton Oswalt) are hunted down to get at the Darkhold book, and only Coulson and the team can save them before the clock ticks out, on “Marvel’s Agents of S.H.I.E.L.D.,” TUESDAY, JANUARY 31 (10:00-11:00 p.m. EST) “Hot Potato Soup” was written by Craig Titley and directed by Nina Lopez-Corrado.

Airing Tuesdays at 10 pm ET/PT on ABC, “Marvel’s Agents of S.H.I.E.L.D.” stars Clark Gregg as Agent Phil Coulson, Chloe Bennet as Daisy “Quake” Johnson, Ming-Na Wen as Melinda May, Iain De Caestecker as Leo Fitz, Elizabeth Henstridge as Jemma Simmons, Henry Simmons as Alphonso “Mack” Mackenzie and more.