Lines between the personal and the professional get blurred when Harvey and Stephen work together on Ava's case, and Mike invites Rachel to join him on a case that gets complicated when his secret falls in the line of fire -- with Rachel's parents.

An old nemesis returns; Harvey and Scottie are on opposing sides again; Louis ends up in Sheila's crosshairs; Mike and Rachel are under Jessica's scrutiny.

A major client demands that Harvey and Mike perform an unpleasant task; Louis faces a difficult challenge; Rachel collects an old debt.

Having lost his partner on the inside, Mike moves to a hostile takeover of Gillis Industries. On the other side, Harvey and Louis pull out all the stops to make sure they win this takeover fight, and things take a personal turn. Meanwhile, Jessica and Malone come face-to-face with Sean Cahill, the attack dog with the weight of the SEC behind him, bent on bringing The Firm down.

Rachel and her mother, Laura Zane, plan for Rachel's dream wedding, but Rachel fears the event may reveal Mike's secret. Meanwhile Daniel Hardman and Jack Soloff make their move against Jessica and the partners, as Harvey and Mike tangle with Hardman's mysterious backer, and Louis tries to find Jack's Achilles heel.