Suits

Jessica's new partnership with Darby is tested when he assigns Harvey a high-profile client who faces the loss of her company if Harvey can't prove her innocence.

Louis offers Mike a case that could change his future at the firm. Also, Harvey and Jessica team up to bring down an old nemesis who complicates their case to keep Ava Hessington out of jail.

Cameron Dennis strikes back at Harvey by arresting one of his clients for murder. Meanwhile, Katrina Bennet and a British version of Harvey arrive to stir things up at the firm.

Harvey's defense of Ava hits a roadblock when the interests of her murder trial are at odds with Louis' work to thwart a hostile takeover of Hessington Oil by a rival businessman.

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

Cameron's continuing use of shady tactics on Ava's case brings up memories of why Harvey left the DA's office to work for Jessica. Mike looks back on what cost him his one chance at a degree.

Harvey clashes with Stephen over Ava's case. Also, Louis enlists Rachel in his battle with Nigel over a broken contract...and heart.

As Ava Hessington's (guest star Michelle Fairley) murder trial begins, Harvey (Gabriel Macht), Mike (Patrick J. Adams) and Jessica (Gina Torres) fight off betrayal from both inside the firm and out. Meanwhile, Louis (Rick Hoffman) and Donna (Sarah Rafferty) seek to even the score with those who have done them wrong.

Pearson Darby Specter's "divorce" brings trust issues to the forefront. Also, Mike asks Rachel to take a big step forward in their relationship.

An old nemesis returns to complicate the Pearson Darby negotiations and put Harvey and Scottie on opposite sides once again. Meanwhile, Mike and Rachel find themselves in Jessica's crosshairs.

Things get complicated when Harvey (Gabriel Macht) mixes business with pleasure and gets caught between Jessica (Gina Torres) and Scottie (guest star Abigail Spencer). Painful memories plague Mike (Patrick J. Adams) as he uses a case to exorcise demons against an old foe, while Louis' (Rick Hoffman) suspicions threaten to expose Mike.

Both Mike (Patrick J. Adams) and Jessica (Gina Torres) lean on Harvey (Gabriel Macht) for support when things from their respective pasts throw them off their game.

Harvey goes one-on-one against an old law school rival while he and Jessica try not to get caught in the crossfire of a battle between Louis and Scottie.

While Harvey and Mike have unpleasant work to do for one of their biggest clients, Louis faces a huge challenge and Rachel tries to collect on an old debt.

Harvey faces off with a relentless attorney who goes after one of his biggest clients. Mike has to make a big decision, and former name partner Charles Van Dyke has an ax to grind.

Harvey and Mike find themselves at odds with a tenacious U.S. Attorney. Meanwhile, Scottie and Harvey can't seem to get on the same page and Mike and Rachel clash over plans for the future.