Carrie thinks Mr Big is keeping her a "secret", whilst Miranda discovers a secret about her new boyfriend. Meanwhile, it comes to light that Samantha has never been discreet with anyone she's ever slept with, and Charlotte divulges a secret love affair from her past.
Nora Durst finds herself adrift during a Departure-related conference in New York. Agitated that her ID has been pinched, Nora scours the convention for her imposter, and ends up getting detoured by an amorous salesman, a best-selling author, and a rogue attendee.
Saul attempts to track down those responsible for the Langley attack, recruiting an unlikely expert to follow the money trail. Quinn, troubled by the collateral damage from a recent mission, tries to take matters into his own hands. An embattled Carrie learns who is really on her side and the Brody family turns to therapy to mend their broken household.
Max is on a mission to deliver free broadband access. Reynolds treats a young girl with a gunshot wound. Sharpe gives difficult news to a long-time patient. Iggy is immensely proud of his patient's success but worries that he may be getting too close.
The results of Frasier and Niles' childhood IQ tests are finally revealed, and one is much higher than the other.