If I remember correctly, the previous volume of Powers marked a major shift in the way things work, with said Powers being basically outlawed altogether. (Which only makes a limited kind of sense in a world with supervillains, but roll with it.) Naturally, therefore, Forever picks up… at the beginning of time. What?!
No, actually, it’s pretty cool. If you’ve ever wondered about the origins of superheroism in the world, or also about the secret history of now-police detective Christian Walker, and if you haven’t wondered about that last bit by now we aren’t reading the same books, then this is a can’t miss entry in the series. Except to warn you that it’s a historical interlude with no apparent bearing on the future, there’s almost nothing else I can say. No, not true, I can say that it’s good. And that it has really unexpected monkey vagina. (Is there another kind? …if you’re not a monkey?)
 Someday, I will probably still not understand people being able to skip a book in a series.