Thoroughbreds (2018) Timeline Explained – Every Event in Order

Amanda killed her horse Honeymooner to end its suffering. The horse was in pain or distress, and rather than letting it continue to suffer, Amanda chose to put it down herself. This act reveals Amanda's capacity for extreme action when she perceives it as necessary, and it also serves as foreshadowing of her willingness to consider killing Mark later in the film.

Foreshadowing: The opening scene with the knife in the stable directly foreshadows both the horse killing and her later involvement in the murder plot.

• amanda
• horse
• honeymooner
• killing
• mercy

Lily wants Mark dead because he is cruel and abusive toward her mother Cynthia. The film shows Mark as a disrespectful, controlling figure who mistreats Lily and her mother, creating a toxic home environment. Lily's resentment builds throughout the film as she witnesses his continued hostility toward the family.

Foreshadowing: Mark's obsession with rowing exercises and his dismissive attitude toward Lily and Cynthia early in the film establish his cruel nature.

• lily
• mark
• stepfather
• kill
• abuse

Amanda suggests killing Mark because she lacks normal emotional responses and empathy. She explains early in the film that she cannot feel genuine emotions, which makes her view murder as a logical solution rather than a moral taboo. Her suggestion reflects her sociopathic worldview and detached approach to human life.

Foreshadowing: Amanda's confession about her emotional numbness during the tutoring session establishes her psychological profile.

• amanda
• mark
• kill
• suggestion
• sociopathy

On the planned day, Tim is sent to kill Mark while Lily and Amanda are away. However, when Mark discovers Tim hiding with a weapon, Tim hesitates and fails to go through with the murder. In desperation, Lily improvises a new plan: she spikes her own drink to frame Amanda, but the situation escalates violently, resulting in bloodshed. The exact details of who dies and how remains somewhat ambiguous, but the outcome is tragedy.

Foreshadowing: The buildup of tension as Mark stays alone at home signals the approaching violent climax.

• tim
• mark
• murder
• plan
• violence

Lily frames Amanda by spiking her own drink and making it appear that Amanda attacked her. This allows Lily to position Amanda as the culprit when the violence occurs. After the bloodshed, Lily pretends to comfort Amanda while hiding the true horror of what happened, effectively shifting blame onto her friend.

Foreshadowing: The tension and desperation in Lily's expression as Tim fails to act sets up her improvised scheme.

• lily
• amanda
• frame
• murder
• betrayal

Amanda is institutionalized as a result of the fallout from the murder plot. After the violent events at the house, Amanda takes the blame for what happened, likely due to Lily's framing scheme. The consequences of their conspiracy lead to Amanda being committed to a mental institution, while Lily appears to escape accountability.

Foreshadowing: The aftermath scene where Lily deceives Amanda while hiding the truth sets up Amanda's downfall.

• amanda
• institutionalized
• prison
• consequences

Tim survives the events but is left unaware of the full truth. At the film's end, Tim encounters Lily during her college interview period. He doesn't know about Amanda's institutionalization or the true extent of what happened. Lily dismisses his questions about a letter from Amanda, showing her continued manipulation.

Foreshadowing: Tim's hesitation during the murder attempt and his confrontation with Mark establish his role as an unwilling participant.

• tim
• alive
• ending
• college interview

Lily and Amanda reconnect because Amanda's mother pays Lily to spend time with her daughter, presenting it as tutoring. However, their bond deepens as they discover shared resentment toward authority figures and a desire to rebel against their circumstances. Both feel isolated and misunderstood, creating a twisted foundation for their friendship.

Foreshadowing: The revelation that Lily was paid to befriend Amanda undermines the authenticity of their reunion from the start.

• lily
• amanda
• reconnect
• friendship
• payment

The ending is bleak because Amanda, the one who lacked emotions and seemed more capable of violence, ends up institutionalized while Lily, who orchestrated everything and betrayed her friend, appears to walk away free. There's no justice or redemption, Lily simply moves on to college, completely disconnected from the consequences of their plan.

Foreshadowing: The final scene of Lily at her college interview, dismissing questions about Amanda, perfectly encapsulates her moral emptiness.

• ending
• bleak
• amanda
• lily
• no justice

Tim is a troubled young man with a criminal past whom Lily and Amanda meet at a party. They hire him to kill Mark, and when he hesitates, Amanda discovers damaging information about his past that they use to blackmail him into going through with the plan. Despite his criminal background, Tim ultimately cannot commit murder when faced with the reality of it.

Foreshadowing: Tim's troubled background is established at the party meeting before the girls decide to hire him.

• tim
• criminal
• blackmail
• hired killer

Lily gets expelled from school due to a plagiarism incident. This occurs after the party and adds to her mounting problems at home with Mark's increasing hostility. The expulsion represents another failure in Lily's life and contributes to her desperate state when she agrees to the murder plot.

Foreshadowing: The plagiarism incident is mentioned in passing but helps explain Lily's psychological deterioration.

• lily
• expelled
• school
• plagiarism