In the poignant and heartfelt drama Twinless, two men grappling with unimaginable loss find solace in the most unexpected of places. The film follows Roman (Dylan O’Brien), a young man shattered by the death of his identical twin brother, who reluctantly joins a support group for those navigating the profound void left by losing a twin. There, he meets Eric (Kody Harvard), an older man whose own twin has also recently passed away. Despite their differences in age, background, and how they process their grief, these two form a raw, unlikely, and deeply moving friendship that becomes a lifeline for them both.

Directed with delicate sensitivity, Twinless is a story about the messy, nonlinear journey of grief and the healing power of human connection. It explores the unique, often indescribable bond between twins and the specific trauma of its severance. As Roman and Eric stumble through their pain—sometimes with anger, sometimes with silence, sometimes with humor—they learn that while they may feel “twinless,” they don’t have to be alone. This is a film that promises to be both a tearjerker and an ultimately uplifting celebration of resilience and found family.

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Meet the Cast of Twinless

1: Dylan O’Brien as Roman / Rocky

Dylan O’Brien delivers a career-defining dual performance as Roman, the grieving surviving twin, and in flashbacks as his charismatic brother, Rocky. O’Brien masterfully captures the stark contrast between the two brothers: Rocky’s vibrant, life-of-the-party energy and Roman’s quieter, more reserved nature, which is now completely submerged in anguish. His portrayal of a man feeling only half of himself is hauntingly authentic, conveying a deep sense of loss that is both visceral and emotional.

O’Brien’s performance is a nuanced study in grief, showing how Roman grapples with guilt, identity, and the overwhelming question of how to move forward. His chemistry with Kody Harvard is the film’s bedrock, creating a believable and tender friendship that feels earned and real. Through O’Brien, we see the slow, painful, but hopeful process of a man learning to live for two.

2: Kody Harvard as Eric

Kody Harvard is a revelation as Eric, an older man whose loss has left him isolated and adrift. Harvard brings a gruff, weathered exterior that slowly gives way to reveal a deep well of pain and vulnerability. His portrayal of a man from a different generation, one less accustomed to talking about his feelings, provides a powerful counterpoint to Roman’s more open struggle.

Harvard’s chemistry with O’Brien is beautifully understated, built on shared silence as much as shared words. He shows how Eric, initially just going through the motions at the support group, finds a sense of purpose in mentoring Roman, and in turn, allows himself to be helped. His journey is about learning that it’s never too late to connect and that grief has no age limit.

3: Lauren Graham as Lisa

Lauren Graham brings warmth and strength to the role of Lisa, the facilitator of the twin loss support group. Graham portrays Lisa with a perfect blend of professional empathy and personal investment, having experienced her own profound loss. She is the gentle guide who creates a safe space for Roman, Eric, and the others to explore their pain without judgment.

Graham’s performance is the heart of the film’s support system. Her calming presence and wise insights provide crucial moments of clarity for the characters and the audience. She represents the idea that while the pain of loss never fully disappears, it can be carried, shared, and understood with the help of others.

4: Tasha Smith as Charlotte

Tasha Smith delivers a powerful performance as Charlotte, a long-time member of the support group who has learned to live with her grief but still carries it with her every day. Smith brings a commanding presence and a well of deep emotion to the role, portraying a woman who is both a pillar of strength for the group and still deeply human in her ongoing sorrow.

Smith’s Charlotte serves as a testament to the longevity of grief and the different forms it can take over years. Her character offers a perspective of hard-won resilience, showing Roman and Eric that there is a path forward, even if it doesn’t look like the one they originally planned. Her moments of raw honesty are among the film’s most moving.

5: James Sweeney as Dennis

James Sweeney provides both levity and heart as Dennis, another member of the support group who uses humor as his primary coping mechanism. Sweeney’s performance is deft and nuanced, ensuring the humor never feels like a deflection but rather an integral part of his character’s way of surviving immense pain.

Sweeney creates a character who is instantly likable and deeply sympathetic. Dennis’s jokes mask a sharp intelligence about the grieving process, and his interactions with the group provide much-needed moments of relief without ever undermining the film’s emotional weight. He is a reminder that laughter and tears can, and often do, coexist.

6: Aisling Franciosi as Marcie

Aisling Franciosi appears as Marcie, Roman’s empathetic and concerned girlfriend who struggles to break through the wall of his grief. Franciosi beautifully captures the frustration, helplessness, and deep love of a partner who wants to fix the unfixable. Her performance highlights the often-overlooked impact of loss on the partners of those who are grieving.

Franciosi’s scenes with O’Brien are filled with a painful tenderness, illustrating how grief can strain even the strongest bonds. Marcie’s journey is one of learning to support without smothering, to love without demanding, making her a crucial part of Roman’s support network and his path toward healing.

The Support Group Ensemble

• Akira Chantaratananond brings a quiet grace to Judy, a newer member of the group whose grief is still fresh and overwhelming. Her performance is a poignant portrait of shock and sadness.

• Cree is compelling as Bianca, a member who expresses her grief through artistic creation, showing a different facet of the healing process.

• Crystal Anne Muñoz provides grounded warmth as Wanda, the group’s unofficial organizer who always has a pot of coffee ready and a kind word to share.

• Katie Findlay is sharp and insightful as Lori, a cynical member whose tough exterior hides a deep capacity for empathy.

• Susan Park rounds out the group as Sage, whose spiritual approach to grief offers another perspective on finding peace.

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Why Twinless Will Resonate Deeply

• Authentic Portrayal of Grief: The film doesn’t shy away from the raw, messy reality of loss.

• Stellar Performances: Led by Dylan O’Brien and Kody Harvard, the cast delivers uniformly exceptional work.

• A Story of Hope: At its core, it’s about the light we can find in each other during our darkest times.

• Unique Focus: Explores the specific and profound bond of twinship with sensitivity and depth.

A Film for Anyone Who Has Ever Loved and Lost

Twinless arrives in theaters on September 5, 2025. Bring tissues, an open heart, and a friend.