Who Played the Menendez Brothers in ‘Monsters’

The 2022 Lifetime film Monsters dramatizes the crimes of Lyle and Erik Menendez through a dual-timeline narrative. In the portions set in 1990, the brothers are played by Sam Durling (Lyle Menendez) and Matthew Dahane (Erik Menendez). In the 2010 timeline, the roles are portrayed by Jared Sandler (Lyle) and Kendrick Cross (Erik). These casting choices align with the film’s structure, which alternates between the trial period and the later prison setting. The performances emphasize the evolving public perception and personal dynamics between the siblings across two distinct phases of the case.

Film Context and Narrative Structure

Monsters approaches the Menendez case as a psychological crime drama, interweaving courtroom testimony with present-day prison life. The split timeline allows the film to contrast the brothers’ public personas during the trial with their mature, incarcerated selves. By using different actors for each timeframe, the production visually reinforces the passage of time and the emotional distance created by years of incarceration. The casting therefore serves both narrative clarity and thematic resonance.

Actor Breakdown: 1990 Timeline

Lyle Menendez (1990)

Sam Durling steps into the role of Lyle during the trial-focused 1990 segments. As the older brother, Lyle is portrayed as more overtly performative in his grief and detachment. Durling’s interpretation leans into the character’s perceived arrogance and detachment, aligning with televised courtroom imagery that many viewers recognize.

Erik Menendez (1990)

Matthew Dahane portrays Erik in the same period, capturing the younger brother’s quieter, more restrained demeanor. Erik’s depiction emphasizes vulnerability and familial loyalty, even as judicial suspicion grows. Dahane’s performance underscores the contrast between Erik’s subdued affect and the gravity of the allegations against both brothers.

Actor Breakdown: 2010 Timeline

Lyle Menendez (2010)

In the prison segments set roughly two decades later, Jared Sandler assumes the role of Lyle. These scenes present a more hardened, introspective version of the character, reflecting long-term consequences. The casting shifts the focus from media spectacle to the lasting psychological toll of the conviction and imprisonment.

Erik Menendez (2010)

Kendrick Cross plays the older Erik Menendez, whose demeanor reflects years of adjustment within the correctional system. Cross emphasizes a subdued maturity, highlighting the brothers’ altered relationship with each other and with the public narrative that once defined them. His performance anchors the film’s exploration of redemption, regret, and confinement.

Production Notes and Casting Approach

The decision to use separate actors for the 1990 and 2010 timelines was primarily visual and storytelling-driven. Casting distinct performers allows the audience to immediately recognize the temporal shift without relying solely on wardrobe or set design. This choice also avoids the challenges of trying to age the same actors convincingly across twenty years within the same emotional register. The casting aligns with the film’s aim to deliver a clear, chronological portrait of how the case unfolded and evolved.

Comparative Context: Other Portrayals

While Monsters focuses on a specific TV-film aesthetic, other projects have depicted the Menendez brothers with varying emphasis. Some productions foreground true-crime procedural detail, while others prioritize courtroom theatrics. The casting in this film is best understood in relation to its structural division between trial and imprisonment, rather than as a comprehensive biography. Each portrayal is shaped by the story it tells and the emotional arc it seeks to convey.

Audience Perception and Critical Context

Viewers often evaluate these portrayals against televised courtroom coverage and earlier documentaries. Because the public record includes extensive footage of the actual brothers, any actor’s physical resemblance and mannerisms are subject to comparison. The casting of younger actors for the 1990 portions helps evoke the men at the time of the crime, while the older casting in 2010 underscores the passage of time and the weight of their sentences. The film’s restrained approach avoids sensationalism, instead focusing on sustained performances across dual timelines.

Conclusion

In Monsters, Sam Durling and Matthew Dahane dramatize the brothers during the trial era, while Jared Sandler and Kendrick Cross embody their later, incarcerated selves. This casting structure supports the film’s split timeline and reinforces the emotional distance between past accusation and long-term imprisonment. The choice of performers and the temporal separation are deliberate storytelling tools that help audiences grasp the evolution of a high-profile case over more than two decades.