Olivia is a 2006-era college student whose heavy consumption of true-crime blogs makes her hypervigilant and extremely cautious. While her friends often dismiss her defensive habits, such as carrying pepper spray and memorizing license plates, she is deeply protective of those around her. When she and her friend are targeted by masked men on an isolated road, her true-crime knowledge translates into strategic survival skills. Instead of freezing in panic, she actively analyzes her environment to find ways to fight back.

Laura is a college student whose carefree, optimistic nature directly contrasts with her best friend Olivia's constant anxiety. She drives an old Volvo and initially downplays potential dangers, trusting in a rational and safe worldview. However, when an aggressive truck forces them off a dark highway, Laura must confront a terrifying reality. Despite suffering severe injuries in a car crash, she relies on her friend's survival instincts and her own inner courage to push forward.

Kyle is a charismatic college student and a prominent member of the Delta Phi fraternity. He actively participates in the fraternity's dark and exploitative culture, treating women purely as commodities for financial and physical gain. His influence over his fraternity brothers allows him to orchestrate and normalize deeply harmful behaviors within their social circle. Behind his public persona, he is a calculating and remorseless predator who enjoys exerting total control over others.

Tony is a member of the Delta Phi fraternity and the recent ex-fiancé of Tish Atwood. He is heavily influenced by the toxic environment of his Greek life organization, often prioritizing his standing among his brothers over his personal relationships. Cowardice and a need for self-preservation drive him to engage in the exploitative practices normalized by his social circle. He relies on deception to maintain his relationships, manipulating those closest to him for personal gain.

Tish is Laura's quiet and shy sister who has recently gone through an abrupt breakup with her fiancé, Tony. Unbeknownst to her, the fallout from her relationship connects to the broader toxic culture of the university's Greek life. She spends her Friday night studying at the library, remaining physically distant from the central conflict. Despite this distance, her loyalty and immediate belief in Olivia's cryptic text messages make her a critical lifeline.

Ava is a university freshman who vanished from a party near the local reservoir three years prior. Her unsolved disappearance is a well-known piece of campus lore that casts a long shadow over the local Greek life system. She serves as a haunting reminder of the unchecked dangers lurking within the university's social scene, representing the forgotten victims of a predatory environment.