I think American audiences are quite interesting in that they can handle almost any amount of violence, but the moment the violence becomes sexual violence it immediately becomes an issue.
We've had really good mainstream publicity for these books and both Wanted and Chosen were snapped up as movie deals before each series even ended so I'm honestly just pinching myself.
I wanted to portray very, very dark subject matter and a deceptively complex story in the brightest colours and simplest lines possible to leave the readers reeling.
Likewise, I see no shame in writing Captain America or Wolverine.