(W) Warren Ellis (A) Jamie McKelvie & Various (CA) John Cassaday. Written by WARREN ELLIS Penciled by JAMIE MCKELVIE* KEV WALKER* DAVID AJA* MICHAEL LARK* ALEX MALEEV & MIKE DEODATO JR. Cover by JOHN CASSADAY Warren Ellis pens six standalone tales that plunge the Secret Avengers into a world of underground black-ops insanity they could never have imagined! A forgotten underground metropolis* Yugoslavian bio-terror* a world-threatening bomb from a broken universe* an ancient and terrible threat mined by drug lords* a time-travel adventure to save the team* and a dangerous investigation into the offices of?O*N*E can the Secret Avengers triumph over the hidden horrors of the world? Collecting SECRET AVENGERS #16-21.