Amy Acker cast as Coulson's cellist girlfriend on SHIELD

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Whedonverse alum Amy Acker has landed a pivotal role on Marvel's Agents of S.H.I.E.L.D., has learned exclusively.

Acker will appear in at least one episode of the ABC series as Audrey, the famous cellist first mentioned in Marvel's The Avengers as being the love of Phil Coulson's (Clark Gregg) life. A talented musician turning heads in Portland, Audrey believes Coulson to be dead and has no idea that he's guarding her from a distance as a super-powered threat from her past re-emerges.

The cellist, who had remained nameless until now, was mentioned earlier this season when Raina (Ruth Negga) goaded Coulson by saying his former long-distance lover had cried for days after his death.

Acker will appear in an episode slated to air Tuesday, April 22.