A shocking secret will be uncovered in the next episode of Marvel's "Agents of S.H.I.E.L.D." season 4.

Robbie Reyes (Jose Zuniga), also known as Ghost Rider, must learn to trust Coulson (Clark Gregg) and the rest of the S.H.I.E.L.D. agents to help him find his uncle, Eli Morrow (Jose Zuniga), before the ghost named Lucy Bauer (Lili Birdell) could use him to become a human again in the upcoming episode titled "The Good Samaritan."

But while working with Robbie, the agents will unlock a shocking secret about the Ghost Rider that none of them could ever expect.

According to the synopsis for the episode that was released by ABC, "Robbie's shocking story on how he became Ghost Rider is finally discovered as Coulson and his team's lives hang in the balance."

While the trailer for the upcoming episode did not provide a hint about the secret of the Ghost Rider, it revealed that the unexpected discovery will also affect the rest of Robbie's family, including his nephew Gabe (Lorenzo Henrie).

As seen in the trailer, Robbie will tell Gabe that he deserves to know everything about the secret of the Ghost Rider. But when an unexpected situation happened right in front of everyone's eyes, Daisy (Chloe Bennet) will tell Gabe that it would be better if he will just close his eyes so he will not see the horrible situation that is unfolding before them.

Meanwhile, fans of the series found out that the new S.H.I.E.L.D. director, Jeffrey Mace (Jason O'Mara), is being blackmailed by Ellen Nadeer (Parminder Nagra) using the video showing the Ghost Rider killing a prisoner while he was working with S.H.I.E.L.D. But what could the new director do to keep the video hidden from the public?

The next episode of Marvel's "Agents of S.H.I.E.L.D." season 4 will be aired on ABC on Tuesday, Nov. 1.