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Once Upon a Time - Giancarlo Esposito Returning for the 100th Episode



Giancarlo Esposito will reprise his role as Sidney Glass, a.k.a. the Magic Mirror, in the landmark episode, EW has learned exclusively.

The last we saw of Sidney, he had aligned himself with the Snow Queen (Elizabeth Mitchell), who freed him in exchange for working against Regina (Lana Parrilla).

Details on Sidney’s return are being kept under wraps. Esposito joins the previously announced Barbara Hershey, reprising her role as Cora, and Robbie Kay, back as Peter Pan. The 100th episode is slated to air as the spring premiere in early March.
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