The promo for the big episode, called “Inescapable,” indicates that fans will get some flashbacks to their days before joining Coulson’s cause.
It also indicates that they’ll face some of their own demons in new and terrifying ways, and that will apparently open the door for a darker side of Simmons.
Fans have always known that FitzSimmons met and became best friends during their time together at the S.H.I.E.L.D. academy, but there are still a lot of blanks in their backstory.
Marvel's Agents of SHIELD 6x06 Promo "Inescapable" (HD) Season 6 Episode 6 Promo