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Sleepy Hollow Season 3

Sleepy Hollow: Shannyn Sossamon Joins Season 3 Cast as 'Mysterious' New Series Regular

Sleepy Hollow is opening a Pandora’s box this fall, and Shannyn Sossamon is going to be waiting inside.

The Wayward Pines actress is joining the Fox drama in the series-regular role of Pandora, TVLine has learned exclusively.

Pandora is a mysterious new presence in Sleepy Hollow who seeks assistance from Witnesses Ichabod and Abbie.

Sossamon is Sleepy Hollow‘s second major Season 3 hire, following Nikki Reed’s casting as Betsy Ross. In addition to her current role on Fox’s summer thriller Wayward Pines, the actress’ TV credits include ABC’s Mistresses, CBS’ Moonlight and HBO’s How to Make it in America.

Sleepy Hollow Season 3 bows Thursday, Oct. 1 on Fox.