Reign‘s about to welcome a new queen (of a sort) to court.

The CW drama has cast Kathryn Prescott as Penelope, a kitchen servant who, as part of an annual castle tradition, finds a bean in her slice of cake and becomes queen for a day, TVLine has learned exclusively.

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Penelope is described as shy and cheerful at first glance, but she’s got a sexy and darkly manipulative side, too.

We hear Queen Catherine gives Penelope a little job in exchange for better treatment around the castle, and the young woman uses it to get what she wants.

The role is likely to recur throughout the rest of the season.

Prescott played Emily Fitch in the British Skins and nabbed the title role in the MTV drama pilot Finding Carter, which is awaiting a pickup.