Now that Marvel's 'Agents of S.H.I.E.L.D.' has largely acclimated to the fallout of 'Captain America: The Winter Soldier," this week's all-new installment "The Only Light in the Darkness" will shift a bit of focus toward the latest comic supervillain making a live-action debut, that of Marvel's Blackout! Watch the power-stealing villain make his debut in the opening minutes of tomorrow's "The Only Light in the Darkness"!

While technically we saw Marcus Daniels (Patrick Brennan) breaking out of the S.H.I.E.L.D. "Fridge" facility in last week's "Providence," this week the villain takes center stage as he returns to stalk his old obsession Audrey (Amy Acker), the very cellist Coulson had so often mentioned. Of course, Coulson and his team remain busy with Patton Oswalt, while the newest "Only Light" clip sees Blackout menacingly hitching a ride, tuning out broadcasts of the recent Hydra takeover of S.H.I.E.L.D.

Meanwhile, here’s what ABC had to say of next week’s “The Only Light in the Darkness”

“The Only Light In The Darkness” – With their world turned upside down, Coulson races to save the life of his one true love as the mystery of “The Cellist,” which began in Marvel’s The Avengers, is finally revealed.

Guest starring are Bill Paxton as Agent John Garrett, Patrick Brennan as Marcus Daniels, Amy Acker as Audrey, B.J. Britt as Agent Antoine Triplett, and Patton Oswalt as Agent Koenig.

Only four episodes remain in the inaugural (and currently only) season of Marvel’s ‘Agents of S.H.I.E.L.D.,’ so what do you think? Will Blackout steer the team back to basics, or will Ward's loyalties get in the way first? Check out the latest sneak peek from “The Only Light in the Darkness” above, and give us your ‘Agents of S.H.I.E.L.D.’ endgame wish list in the comments!

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