"Marvel's Agents of S.H.I.E.L.D. is set to return with Season 1 Episode 13 after two weeks break on ABC. The show took a short break just after revealing the past of Skye and Phil Coulson's mystery of death and resurrection. But where does it go from here? Read on to find out what happens in "Marvel's Agents of S.H.I.E.L.D." Season 1 Episode 13 "T.R.A.C.K.S." [Spoilers Ahead!]

'Marvel's Agents of S.H.I.E.L.D.' Season 1 Episode 13 Spoilers: Everything You Need to Know

Updates on "Marvel's Agents of S.H.I.E.L.D." Season 1 Episode 13 has suggested the entry of many exciting characters to the show. In the last aired episode, super villain Donnie Gill was introduced to the show.

Now it seems like the show is ready to make a comeback with a bang. According to the spoilers, it has a lineup of major characters from Marvel's universe to be introduced on "T.R.A.C.K.S." Along with that, there is lots of action and adventure in store. There is also a mystery that is waiting to be unfurled by the agents of S.H.I.E.L.D.

According to spoilers report by Hypable.com and the recently released promo clip, the team of agents of S.H.I.E.L.D. and their leader Phil Coulson will have a challenging trip on train in Italy. Lots of action is anticipated as the train is mysterious in more than one way. The mysterious train has several challenges waiting onboard that is headed towards its fatal wreck. There is a unknown woman who pretends to be a woman in problem and coaxes the officer on duty to help her. As soon as he gets to the compartment he is attacked by her and an accomplice.

The train full of passengers also has well suited men in it with a mysterious mission. By looking at the promo clip, it seems the comeback episode is packed with action in the train to Italy.

But what are these agents of S.H.I.E.L.D. doing on the train packed with danger? Spoilers suggest that "Marvel's Agents of S.H.I.E.L.D." Season 1 Episode 13 "T.R.A.C.K.S.," Phil Coulson's team is headed to unveil the mystery of Clairvoyant from the antagonist's camp. The mystery may help them unveil the Centipede's intention of seeking the well concealed information of Phil Coulson's death and immediate resurrection.

More spoilers have hinted towards the debut of Marvel's villain Deathlok. In the last aired episode of "Marvel's Agents of S.H.I.E.L.D." Season 1, Mike Peterson came to life even after suffering severe burns. Reportedly, Mike Peterson will transform into Deathlok, unwillingly though. It is said his transformation will bring mechanical powers to him. Along with that, coming to the small TV screen is "Thor's" Jamie Alexander's Lady Sif.

The most thrilling and the anticipated entry in "Marvel's Agents of S.H.I.E.L.D." Season 1 Episode 13 "T.R.A.C.K.S.," is that of legendary comic book writer and Editor Stan Lee as reported by Hollywood Reporter. Stan Lee revealed that his character in the upcoming episode of "Marvel's Agents of S.H.I.E.L.D. has a "big role" to play.

Also, guest starring in "Marvel's Agents of S.H.I.E.L.D." Season 1 Episode 13 are David Conrad as Ian Quinn, Emily Baldoni as Sofia, Ludwig Manukian as Conductor, T.J. Ramini as Mancini and more.

Watch the spoiler promo clip of "Marvel's Agents of S.H.I.E.L.D." Season 1 Episode 13 "T.R.A.C.K.S.," below:

Credit: Youtube.com/ N Buks

For more spoilers on 'Marvel's Agents of S.H.I.E.L.D.' Season 1 Episode 13 T.R.A.C.K.S., read below:

Marvel's Agents of S.H.I.E.L.D. Season 1 Episode 13 Spoilers: Team Unveils the Mystery of Clairvoyant, 'Thor's' Lady Sif to Enter