Clayton's missus and mistress will finally meet on Quantico.

In the past timeline on Sunday's midseason finale (10/9c, ABC), Caleb (Graham Rogers) takes Shelby (Johanna Braddy) to a New Year's Eve party at his house, where she meets his mother, Sen. Claire Haas (Marcia Cross), and doesn't have to try too hard to make a good first impression.

"My husband's told me about you," Claire says in the sneak peek above. (We bet.)

But it turns out Claire also knew Shelby's parents. Watch to find out how.

Quantico airs Sundays at 10/9c on ABC.