Cara Buono is poised to be a considerable Person of Interest.

The Mad Men alumna will heavily recur in Season 4 of the CBS drama as a femme fatale, our sister site Deadline reports.

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Buono’s character is said to be uniquely qualified to navigate next season’s “new world order,”in which Samaritan is online and all-seeing, forcing Reese, Finch and the rest of Team Machine to lay low using unimpeachable aliases.

Buono’s many TV credits include guest spots on Elementary, The Good Wife, The Carrie Diaries, Castle and Brothers & Sisters.