Jessica is a 32-year-old consultant returning to Duquette University for her college reunion. Growing up with financial struggles and a father addicted to painkillers, she developed an obsessive need to be perceived as flawless and exceptional. Her severe imposter syndrome drives her to constantly measure her self-worth against her wealthy former friends, the East House Seven.

Heather is a wealthy and charismatic student at Duquette University who serves as the informal leader of the East House Seven. Her parents heavily dote on her, providing her with sports cars and endless financial resources. Though she can be warm and inclusive, she effortlessly outshines her peers, which unintentionally and sometimes intentionally stokes deep jealousies among her closest friends before her tragic death.

Mark is the wealthy heir to a real estate empire and a former president of the Phi Delt fraternity. Handsome and privileged, he occupies the absolute top of the social hierarchy at Duquette University. Beneath his princely exterior, he harbors intense anxiety about his family's reputation and a deep-seated fear of appearing weak, driving him to seek partners who look up to him.

Brandon is a scholarship student who rides a motorcycle and maintains a bad boy image around campus. Unlike his wealthy friends in the East House Seven, he intimately understands financial struggle and sells drugs on the side to help his single mother pay the bills. He is highly perceptive and easily looks past the superficiality of campus wealth to understand people's true natures.

Caro is a sweet kindergarten teacher originally from Miami. As a member of Kappa Kappa Gamma and the East House Seven, she often acts as the peacekeeper of the group. However, her pleasant demeanor masks a profound fear of being left behind by her more ambitious and wealthy friends, which causes her to go to extreme lengths to stay connected to them.

Frankie is a former Duquette football star who achieved his dream of playing in the NFL. During college, he leaned into the stereotype of the dumb jock within the East House Seven. Beneath his athletic persona, he wears a crucifix to remind him of his Catholic guilt and carries heavy secrets regarding his true identity and the immense pressures of college athletics.

Jack is an earnest former Eagle Scout raised in a strict Baptist family. During college, he often served as the moral center of the East House Seven. However, his life has been severely derailed since graduation, as he remains the primary suspect in the minds of his peers for Heather's unsolved murder, casting a long shadow over his reputation.

Courtney is a wealthy woman who was accepted into the elite Chi Omega sorority during her freshman year. She currently maintains a curated image as a successful lifestyle influencer. Behind her flawless exterior, she is intensely competitive and insecure, constantly battling for social supremacy and struggling with an addiction to diet pills that fuels her pursuit of perfection.

Eric is Heather's brother, who was an awkward, unpopular teenager when his sister ruled the Duquette campus. Unable to move past her unsolved murder, he has taken a staff job at the university specifically to investigate her death. He has spent the last decade meticulously researching her friend group, determined to expose the killer hiding among them.

Dr. Garvey is an elite, highly connected economics professor at Duquette University who has advised U.S. presidents. He controls access to prestigious post-graduate fellowships that serve as gateways to Ivy League programs. He abuses this immense academic power, leveraging recommendation letters to exploit ambitious, desperate female students.

Jessica's father is a man burdened by unfulfilled ambitions. Having given up his dream of working in Washington, D.C. to take an accounting job, he develops an addiction to OxyContin. He channels all of his crushed aspirations into Jessica, demanding she achieve the perfection and Harvard admission that eluded him.

Jessica's mother is a practical woman who tries, often unsuccessfully, to protect Jessica from her husband's intense demands. She warns Jessica about the crushing financial realities of taking out loans for an elite university like Duquette, though her concerns are ultimately ignored in favor of ambition.

Amber is a wealthy, beautiful freshman pledge considered the ultimate prize by the Duquette sororities. Her decision to pledge Chi Omega rather than Kappa Kappa Gamma deals a devastating blow to Jessica's social ambitions. She eventually transfers from the university after a private video is maliciously leaked.

Trevor is a member of the Phi Delt fraternity alongside Mark and Frankie. He is a gossip who delights in uncovering and sharing scandalous information about his fraternity brothers and their girlfriends, ultimately sparking violent confrontations within the house.

Charles is a student at Duquette and a friend of Trevor Daly. He uses inside knowledge about the financial collapse of Mark's family business to publicly taunt him, intentionally poking at the deepest insecurities of the campus royalty.

Mark's father is a wealthy real estate developer whose business and personal failures deeply impact his son. When his company goes bankrupt in the housing crash and his marriage falls apart, his subsequent actions instill a profound fear of weakness and failure in Mark.

Mark's mother is a ruthless woman who publicly cheats on her husband and ultimately orchestrates a takeover of his failing real estate company. Her cutthroat actions deeply traumatize Mark, shaping his extreme anxieties about loyalty and public humiliation.

Heather and Eric's wealthy parents completely dote on their daughter, showering her with expensive gifts like a new BMW. Their obvious favoritism and immense wealth insulate Heather from the realities most college students face.

Brandon's single mother struggles financially, living in sharp contrast to the wealthy parents of the other Duquette students. Her inability to pay the bills motivates Brandon to take extreme risks to support them both.