The Team Goes to Hell and Back in Season 6 Finale of 'Marvel's Agents of S.H.I.E.L.D.'

In tonight's intense two-hour Season 6 finale of Marvel's Agents of S.H.I.E.L.D., our team is forced to go to hell and back. However, time is running short. The fate of humanity hangs in the balance. Izel will stop at nothing to complete her mission, even bringing back an unexpected familiar face.

In a sneak peek of what you can expect tonight, the captured Mack and Yo-Yo assert that Izel will receive no help from them. However, Izel has brought Flint, the young Inhuman from Season 5, who helped return S.H.I.E.L.D. to their own time by rebuilding the Monolith with his geo-kinesis powers, back into existence.

Flint, confused as to how he got here, and upset that his friends are in trouble, threatens Izel despite the emotional Mack and Yo-Yo's protests. Enthralled by the display of Flint's abilities, Izel realizes she has exactly what she needs to build the monoliths and complete her mission. Unfortunately, Mack and Yo-Yo are restrained and forced to watch Izel possess their young friend.

Sarge's powers are dangerous as we've discovered last week. However, May and Daisy believe this is exactly what they need to defeat Izel. They hold out hope that the bit of Coulson within him will help him control his rage and powers. More than that, May will do whatever it takes to remove the darkness in Sarge to get Coulson back, and nothing will get in her way.

With everything hanging in the balance, can we trust Sarge to put a stop to Izel?

Tune in tonight to watch the two-hour Season 6 finale of Marvel's Agents of S.H.I.E.L.D. starting at 8|7c on on ABC!