"With a scientific mind and a lethal mastery of martial arts, Bobbi Morse has always been one of S.H.I.E.L.D's best agents, but now she's going solo! When someone close to her is murdered, Bobbi discovers some strange goings-on in the peacekeeping organization's own medical-and-recovery network. But when Lance Hunter's undercover gig at the London Hellfire Club goes south, Mockingbird sets off, battle staves at the ready, to save Hunter--and the Queen of England!"--Back cover.

"Contains material originally published in magazine form as Mockingbird: S.H.I.E.L.D. 50th Anniversary #1 and Mockingbird #1-5." "Collected Editions"--Inside front cover. "T+"--Back cover.