Marvel is pleased to present your first look at THUNDERBOLTS #21 from the critically acclaimed creative team of Charles Soule and Carlo Barberi! The Thunderbolts have a problem - and her name is Mercy. Slaughtering innocent people to fulfill her own twisted mission. But how far are they willing to go to stop her? Ghost Rider has inadvertently pulled the Thunderbolts into the underworld. And they're about to come face-to-face with the big man himself - Mephisto! And he's got a solution to their Mercy problem - only it's going to cost them. Nothing good ever happens in the underworld. The Thunderbolts are pretty far from the side of angels, but would they make a deal with the devil? Find out when the blockbuster "No Mercy" arc continues in THUNDERBOLTS #22!