Following the merger, Harvey and Zane grapple over who should lead the firm. Louis tasks Katrina with culling the herd, but doesn't like her decision. Donna helps her see beyond the numbers.

The transition continued to cause headaches as Harvey and Donna get their first taste of how Samantha operates and Alex tries to impress Robert Zane.

Alex is caught between Harvey and Zane as Louis struggles to overcome a shocking setback.

Harvey confronts his personal issues to defend his brother. Louis sacrifices for family.

Harvey and Louis assess their relationship. Donna doubts Samantha's motives for helping her.

Donna's agreement forces Harvey to help David Fox. Alex comes to Zane's aid on a personal venture.

Harvey helps Samantha settle an old score. Louis faces a hurdle on the path to fatherhood.

An old foe backs the firm into a corner. Samantha and Alex try to broker a peace between clients.

When Harvey and Zane can't stay on the sidelines, Donna does what's best for the firm.

Harvey laces up for a rematch against an old foe. Louis struggles to hold the reins of the firm.

Louis learns the finer points of managing Harvey. Alex is caught between Samantha and his wife.

Harvey and Donna are caught in the crosshairs when Stu is blackmailed; Samantha revisits her past.

Harvey's forced to choose a side when Samantha and Scottie go toe-to-toe. Louis represents Lipschitz.

Donna's relationship complicates a deal for Harvey and Alex. Samantha helps Louis get justice.

When Hardman comes looking for retribution, the firm rallies to Harvey's defense.