when s.h.i.e.l.d. fell, natasha romanoff and sasha, her sort-of-adopted russian assassin kid, were forced to assume new identities. and by taking in his daughter, ex-hydra assassin alex carter, steve was officially harboring a fugitive. they had no choice but to stay under the radar too. nearly a year later, the avengers reassemble to take down what's left of hydra. step 1 is acquiring loki's scepter. once they have it, all is well and good until tony stark decides to mess with the stone and creates Ultron. add the impending threat of pietro and wanda maximoff, and the avengers are going to need help. unfortunately, the best they can find is an ex-child hydra assassin and a smart-mouthed, moderately unstable teenage genius from the same place that produced natasha romanoff. ★★★ (progeny series book 3) (age of ultron)