Thomas Kessler is the founder and CEO of Thomas Kessler Furniture, a high-end furniture design company that has been a longtime client of Louis Litt.
- "Why would a man turn down a better offer and then take out an ad in the "Journal" pronouncing the value of integrity over profits? It's because he knew what Simon Lowe was doing, and you knew he knew. And I remind you, I will call Thomas Kessler, and he will tell me the truth, because he is a man of integrity."
- ―Daniel Hardman to Alex Williams
Thomas visits Zane Specter Litt Wheeler Williams to enlist Louis Litt's legal aid after he is nearly put out of business by a contractual stipulation. Donna Paulsen steps in to assist, but in doing so also catches his eye, as he and Donna hit it off and he asks her out on a date after she solves a problem for him. She initially declines, but accepts after some encouragement from Gretchen. They go out on a date and start a relationship, with Donna inviting Thomas to her apartment for sex.
The following morning, Donna tells Louis about her relationship with Thomas, but doesn't tell Harvey until he sees Thomas arriving at the firm to pick her up for a date. In business, Thomas is fair and honest, which leads to him accepting a deal from Harvey's client and then backing off once Donna learns that the client only wanted Thomas's deal to get a better one from a competing business. Because Harvey told Donna and broke privilege, the firm gets sued and Harvey almost loses his license to practice law, during which process he asks Thomas to lie in court in order to save Donna, and not himself. Due to that, Thomas sees what Donna means to Harvey, and asks what Harvey means to Donna, and Donna admits to Thomas she can't cut Harvey out of her life.
Thomas then attends the hearing, where he witnesses Robert Zane claim responsibility for breaking privilege. Thomas lies on the stand that he heard the news from Alex, and as Alex testified that he got the news from Robert, Robert is disbarred.
Donna, who had slept with Harvey that same night, calls him the next morning and asks him out for lunch, intending to break up with him, although Thomas elects not to call her back or take her up on her offer for lunch. Thomas, meanwhile, pays a visit to the firm, notifying Alex that he is dropping them since they made him lie, and that while he wishes things did not play out the way he did, his mind would not be changed.
Later that night, Donna receives a phone call from Thomas, who apologizes for not calling her back, stating that he knew she was going to break up with him since they were going from spending nights together to suddenly going for lunch, and that he couldn't bear to hear what she had to say. Donna tells him that he is a good man and the pair amicably end their relationship. Donna calls Harvey shortly after to inform him that that she just broke up with Thomas, causing Harvey to briefly regret his decision to sleep with her, informing her that he did not know that she was still dating him when he came over. Donna soothes the blow by claiming that while they hadn't officially broken up, Thomas knew that it was over, adding that Harvey did nothing wrong.
The next night, Thomas is visited at his workplace by Harvey, who informs him that the Bar had appointed Faye Richardson to monitor them and that she wished to ask Thomas why he left them. Thomas replies that he wouldn't lie again, while Harvey asks him to be their client again. Thomas refuses to do so, reminding Harvey that he wouldn't lie for them again, although Harvey adds that they had tripled his business and that if he had done the "right thing", Thomas would have lost his expansion. Thomas asks Harvey what Donna is to him, and Harvey replies that Donna is the most important person in his life and that she knows it. Realizing that they must have gotten together, Thomas asks when it happened and Harvey immediately responds that it was the night following the hearing. As Harvey was honest, Thomas agrees to be their client again on the sole condition that Harvey is his attorney and not Alex, declaring that he doesn't trust Alex. Harvey doesn't think it's a good idea and asks Thomas whether he can get past the fact that Donna had slept with him before breaking up with Thomas, and while Thomas has a brief moment of hesitancy, he states that he can.
Thomas arrives at Donna's office later to sign the engagement letter. He and Donna have a small chat, and Thomas elects to take the letter to Harvey's office to sign there instead of signing it now and giving it to Donna. However, at Harvey's office, Thomas notifies him that he would be backing out of the deal and not signing with them as he could not handle Harvey and Donna being together. Knowing that Thomas no longer being a client would lead to Faye going through with the exit interview, Donna tells Harvey that she would tell Faye the truth. Heading to Faye's office, Donna informs Faye that she was in a relationship with Thomas that ended and that this led to Thomas leaving the firm; additionally, Donna adds that having an exit interview with him would reopen the wound and asks Faye if she ever had a relationship she thought would last but ended badly. Faye, sympathizing with the situation due to the circumstance with her husband, thanks Donna for telling her the truth and notifies her that she will no longer be seeking an exit interview with Thomas.
|Suits, Season 8|
|#01||"Right-Hand Man"||#09||"Motion to Delay"|
|#02||"Pecking Order"||#10||"Managing Partner"|
|#03||"Promises, Promises"||#11||"Rocky 8"|
|#04||"Revenue Per Square Foot"||#12||"Whale Hunt"|
|#05||"Good Mudding"||#13||"The Greater Good"|
|#06||"Cats, Ballet, Harvey Specter"||#14||"Peas in a Pod"|
|#07||"Sour Grapes"||#15||"Stalking Horse"|
|Suits, Season 9|
|#01||"Everything's Changed"||#06||"Whatever It Takes"|
|#02||"Special Master"||#07||"Scenic Route"|
|#05||"If the Shoe Fits"||#10||"One Last Con"|