who plays kat on madam secretary

Hugh sacrificed his chance at the National Medical Research Council to save his wife Quinn, who had late-stage liver cancer. He sold family heirlooms to fund her treatment, but Quinn used the money to buy a car for her first love, James. She became obsessed with their past together, ignoring her son Luke's feelings. Hugh and Luke gave her three chances to change, but she refused. Finally, Hugh joined the National Physician Program and left with Luke. After he departed, Quinn regretted her actions, but it was too late to make amends.

When Sarah Colt visits her boyfriend's family, she unwittingly uncovers their scheme to seize her family's wealth. Shocked by this betrayal, she flees, but her boyfriend catches up with her. It's then that she realizes his previous gentlemanly demeanor was merely a facade. Confronted with threats from his family, Sarah courageously defends herself, determined to seek justice and protect other women who share similar fates to hers.

Wenny, from the largest family in the country, was saved by Jason, and in gratitude, she married him. In order to relieve Jason from pressure, Wenny concealed her identity while being with him, helping him rise to fame. Just as Wenny was about to confess her identity, Jason cheated on her and betrayed her. After seeing Jason's true colors, Wenny took back everything she gave him, returned to being single, and attracted the attention of many outstanding individuals who pursued her relentlessly.

Maya Monroe, a renowned designer, becomes a housewife after marrying Brendan Foster. On their anniversary, her mother-in-law accuses her of infidelity, plotting to replace Maya with Marjorie Sutton, a wealthy heiress. Manipulated by both women, Brendan believes the lies. Marjorie causes Maya to miscarry, and Brendan, deceived further by a fake paternity test, believes the child wasn’t his. Later, the Sutton family reveals Maya is their true daughter and that Marjorie is an imposter. Determined to get justice, Maya outsmarts Marjorie, who ends up imprisoned but later escapes and kidnaps Maya. Brendan rescues her, but Marjorie dies, taking his mother with her. In the end, Maya and Brendan reconcile, and after the birth of their child, they find happiness together as a family.

When Lynn died, Minna's father met a tragic end at the hands of her half-sister, who shoved him off a high-rise building in front of her own eyes. The man Minna loved most, Ethan, was the one who personally ensured her imprisonment. Enduring three years of torment behind bars, Minna was left shattered by Ethan's parting words: "Take good care of her." Determined to reclaim all that was lost, Minna emerges from her incarceration, vowing to restore what was taken away.

Jewelry designer Zilla accidentally saved Master Smith, who then decided to match her with his grandson, Yasir, arranging an engagement between them. Displeased with the arranged marriage, Yasir left the country in a fit of anger and spent the next three years abroad. During that time, Zilla and Yasir never met—until their first encounter unexpectedly happened in bed. Unaware of Zilla's true identity, Yasir found himself living with her by a twist of fate. As they started cohabiting, Yasir was torn—on one hand, he wanted to break off the engagement, but on the other, he found himself irresistibly drawn to her mysterious alter ego.

Due to strict family rules, the twin sisters have lived vastly different lives. One was nearly strangled at birth, while the other was cherished like a treasure. Adding to the turmoil, the sister who nearly lost her life is forced into the role of her twin's substitute and also becomes her sister's supposed cure. She doesn't have an identity or freedom. Nobody loves her, until one day that person shows up...

A sudden car accident transforms Marcel Randall, the top billionaire of the Oplacor nation, into a vegetative patient. His girlfriend Lauryn Logan, unaware of his true identity, remains unwaveringly committed. Enduring contempt and mockery, she works desperately to earn money, with her sole aim being to keep Marcel alive. After six years, Marcel awakens and witnesses the woman who struggled relentlessly in dire circumstances for his survival. Overwhelmed with emotion, Marcel vows to never let anyone who has ever insulted Lauryn go unpunished, determining that all the world's honor shall ultimately belong to her.

Olivia Carter has waited for someone from the Kane family to marry her for 20 years. However, her mother, desperate for a 200,000 dowry, marries her off to someone else instead. When Ethan Kane arrives at Blossom Village, his convoy crosses paths with Olivia's wedding procession. Spotting the family heirloom ring on her, Ethan realizes she is the one he was engaged to. On her wedding night, Olivia's new husband dies from excitement, leaving her a widow. The Grant family exploits her to repay debts. Ethan finally discovers that Olivia is the girl who saved him years ago and arrives in her moment of need, offering her unconditional respect and love. Together, they build a happy life.

In a family where sons inherit the fortune, while daughters are treated like strangers, Grace Reid is determined to secure her own position. To ensure her status, she switches her newborn daughter with another family's son. The baby girl is left in the care of Beatrice Young, who, more interested in money than motherhood, abandons the child. But twenty years later, Beatrice returns, presenting her own daughter as Grace's biological child, and Grace, desperate to marry off Abby as her daughter, begins to subject her real daughter, Kiana, to relentless humiliation and manipulation, pushing her to divorce her husband, Ashton Grant. In a twisted effort to bolster Abby's future, Grace even schemes to take Kiana's life…

Sophie was treated as a blood donor for her brother since birth. Later, her brother sells her to a pervert. In a moment of crisis, she meets Reid Graham, who is allergic to women. They accidentally become intimate, resulting in Sophie becoming pregnant with triplets. The two begin a journey of mutual redemption.

Cleo Waverly, a billionaire CEO, is betrayed by her husband of three years. To escape his attempts on her life, she ends up living on the streets, hiding and surviving as a homeless woman. In her darkest hour, she is rescued by Gus Hastings, the CEO of Apex Group, who is living under an assumed identity while caring for his ailing family. As they spend time together, Gus helps Cleo reclaim her former glory, while Cleo helps Gus confront and heal from the childhood trauma and long-standing emotional wounds he carries. Together, they embark on a journey of mutual redemption.

Three years ago, Rebecca Johnson discovered her foster family took her in for her utility, intending her to protect Sara Johnson, their heiress. Unaware, Rebecca's beauty bred resentment in Sara, who manipulated her father into sending Rebecca to an older man. In self-defense, Rebecca stabbed him, leading the Johnsons to confine her to Grotom Island's asylum under the guise of mental illness. After enduring three years of hardship, Rebecca survived. Unbeknownst, the Johnsons sought to eliminate her to avoid scandal when allying with Andrew Moore. Andrew, rumored to have visited Grotom Island, mistook Rebecca for his deceased sister upon meeting her. Returning, Rebecca used this error to stay with Andrew temporarily, focused on avenging the Johnsons. Despite repeated close encounters, Andrew's probing spared her, not knowing he'd already seen through her facade. Her true self intrigued him deeply.

Upon discovering she had only three months to live, Charlene finally realized she had been used by those around her and resolved to live for herself at last. So, she confronted her colleagues, exposing the dark side of her workplace, completely cut ties with her parents, who favored her younger brother, and ended her relationship with her unfaithful fiancé. In her final days, she agreed to Elbert's pursuit, making him her last boyfriend...

Shirley was David's adopted daughter, and they had relied on each other for many years. Though they shared no blood relation, their bond surpassed that of a biological father and daughter. After David's death, Shirley, filled with hatred for the Shane family who abandoned her, became a tutor for them. She initially had the opportunity to seek revenge, but an unexpected revelation about her biological mother's enduring love for her led her to reconsider. Later, she discovered that she had stomach cancer. Being caught between love and resentment for her mother, she ultimately decided to sacrifice herself to save her mother's adopted daughter.

When Lily Quinn and Lucas Mosby were young, their grandparents set a marriage pact for them. However, Lucas has been living abroad, so no one mentions it. On the day he returns home as the CEO, both receive surprise calls from their grandmothers, telling them to meet at a restaurant for a blind date. That’s when they learn about their engagement. Lily, who dislikes arranged marriages, decides to ruin the date. She asks her best friend to help her find a temporary boyfriend. However, she mistakenly thinks the man who shows up is her rented date. To her shock, it’s actually Lucas, the very CEO she is supposed to meet.

Celia grew up in an orphanage. After being reunited with her family, her mother passed away during a bitter divorce. The orphan girl she adopted, Nancy, turned out to be a matchmaker who accidentally bound Celia to her cold CEO boss, Henry. Haunted by childhood trauma, Henry was physically allergic to women, rendering his blind dates disastrous—until he met Celia and relentlessly pursued her. Mistaking his avoidance of others as disinterest in women and fearing their professional ties, Celia fled and even tried to quit. They forged a marriage pact to cure his condition, but their fragile bond was sabotaged by Celia's stepsister. With Nancy's schemes and Henry's grandmother's support, their relationship deepened. When Celia's childhood friend returned, declaring their love a "fake crush." Could their fragile bond survive?

In a family biased towards sons, Sheryl's existence as a daughter was deemed a sin. Her college admission letter was stolen, and she was nearly sacrificed to the dragon god in an escape attempt. Her mute father, beaten to the brink of death trying to save her, fueled her resolve. Escaping her ordeal, Sheryl vowed to rise to prominence, return to support her parents, and ensure those who wronged them faced retribution.