Are you in the mood for some spies on a train? That's the general premise behind the Feb. 4 episode of Marvel's Agents of S.H.I.E.L.D., judging from the newly released trailer. In addition to giving the agents a place to go under cover, the train will also offer them an opportunity to meet legendary comics creator Stan Lee. Check out his super-brief appearance in the TV spot below.
Lee, who has had cameos in 18 films based on Marvel characters, is said to have a "big role" in the episode, although no details have been revealed.
Marvel's Agents of S.H.I.E.L.D. airs Tuesdays at 8 p.m. ET/PT on ABC.