Rebecca Romijn has uncovered a killer guest spot on Chuck.

The X-Men and Ugly Betty alumna is set to appear in the NBC dramedy’s upcoming fifth and final season as Robin Cunnings, a cold, calculating, and — dare we say it? — cunning CIA Special Agent known for her rather abrasive interrogation technique, EW.com reports.

But it gets worse (or perhaps better?): Cunnings is a member of a rogue group planning to — gasp! — frame Chuck (Zachary Levi) for a ghastly crime.

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Romijn — who currently co-stars on Adult Swim’s NTSF:SD:SUV — brings the drama in the sixth episode of Chuck’s latest cycle, which launches Friday, Oct.21.