The Killing of a Sacred Deer (2017) Timeline Explained – Every Event in Order

Martin targets Steven's family because Steven's surgical error caused the death of Martin's father. Martin inserts himself into Steven's life to force him to confront his past actions and demand retribution, framing it as a balancing of scales - Steven must sacrifice someone from his own family to atone for killing Martin.

Foreshadowing: The opening diner scene where Steven mentors Martin establishes their connection, while later Martin reveals the true nature of their relationship.

• martin
• steven
• retribution
• father death
• surgical error

Martin's father died during an open-heart surgery performed by Steven. The film implies it was a surgical error or negligence, though the exact details are never fully explained. Steven's conversation about watches with the anesthesiologist hints at his distraction during procedures, suggesting his drinking problem may have compromised his surgical judgment.

Foreshadowing: Steven's conversation about watches after surgery establishes his character flaw early on.

• martin father
• death
• surgery
• steven error

Bob becomes paralyzed after Martin hints to Steven that he must sacrifice a family member to pay for his past mistake. The paralysis strikes suddenly and without medical explanation, functioning as a supernatural consequence of Martin's presence and threats. This aligns with the film's Greek tragedy structure where guilt demands payment.

Foreshadowing: Martin's ominous statement about Steven needing to pay a price directly precedes Bob's paralysis.

• bob paralysis
• martin
• sacrifice
• supernatural

Martin demands that Steven kill one of his family members - his wife Anna, son Bob, or daughter Kim - to balance the scales for causing his father's death. Martin frames this as cosmic justice: one life taken by Steven's hand must be repaid with another life. The demand creates the film's central moral crisis.

Foreshadowing: Martin cornering Steven during dinner and hinting at the price Steven must pay foreshadows this demand.

• martin demand
• sacrifice
• family
• atonement

Kim falls ill during choir rehearsal shortly after Bob becomes paralyzed, experiencing similar symptoms. Her illness reinforces the supernatural nature of the family's punishment - it's not just Bob who is targeted but the entire family unit. This escalates the family's terror and suggests Martin's curse affects all who are connected to Steven.

Foreshadowing: Kim's illness mirrors Bob's, both occurring after Martin's direct manipulation of the family.

• kim illness
• bob
• sickness
• martin curse

Steven attacks Martin in a desperate attempt to stop the supernatural torment threatening his family. As Bob's paralysis and Kim's illness worsen, and facing the impossible choice Martin presents, Steven resorts to violence believing he can eliminate the source of his family's suffering. This act represents Steven's complete breakdown under pressure.

Foreshadowing: The mounting family crises and Martin's unwavering demands build to this breaking point.

• steven violence
• attack martin
• desperation

Steven confronts his family with a rifle at the climax because he believes he must fulfill Martin's demand to prevent further suffering. Faced with the impossible choice of sacrificing one family member or losing them all to the ongoing supernatural punishment, Steven attempts to make the choice himself. The scene represents the ultimate toll of his past guilt.

Foreshadowing: The buildup of family illnesses and Martin's persistent demands create this inevitable confrontation.

• steven rifle
• sacrifice
• confrontation
• climax

Steven's dark secret is that he was a functioning alcoholic who caused a patient's death during surgery - Martin's father. He has maintained sobriety since, which he reveals publicly at the gala, but his past drinking compromised his medical judgment and led to the fatal surgical error. This guilt is what makes him vulnerable to Martin's manipulation.

Foreshadowing: Steven's gala speech about sobriety and the watch conversation hint at his character flaws.

• steven secret
• alcoholism
• surgical error
• guilt

The family dines at a diner in the final scene, echoing Steven and Martin's first meeting place. This circular structure suggests the trauma cannot be escaped - the diner represents where Steven's guilt began. The ambiguous ending leaves unclear whether Martin has truly left their lives or if the cycle continues, maintaining the film's haunting quality.

Foreshadowing: The opening diner scene establishes this location as symbolically significant.

• diner ending
• final scene
• circular structure

The ending remains deliberately ambiguous about whether Steven actually killed one of his family members. The family sits together at the diner appearing traumatized but physically unharmed, yet their hollow expressions and Martin's lingering presence suggest something irreversible has occurred. The film leaves viewers uncertain about the specific outcome while confirming the family's permanent psychological damage.

Foreshadowing: The tense rifle confrontation scene sets up this unresolved ending.

• ending ambiguity
• sacrifice
• family fate

Steven and Anna's strange intimacy after their argument about Bob's hair represents the troubled, codependent nature of their marriage. The scene shows their relationship is fractured but they remain emotionally entangled. This odd sexual encounter after conflict suggests their bond is twisted by stress and guilt, reflecting the overall dysfunction that Martin exploits.

Foreshadowing: The family dinner conflict establishes the marital tension that manifests in their intimacy.

• steven anna
• intimacy
• marriage problems

Martin manipulates Kim and Bob through private meetings where he plants ideas and emotional seeds. He approaches them individually, twisting their emotions and making them complicit in his psychological warfare against Steven. His manipulation creates division within the family and intensifies the children's vulnerability, making them unwilling participants in the escalating terror.

Foreshadowing: Martin's initial friendly approach to the family masks his true manipulative intentions.

• martin manipulation
• kim bob
• psychological control