Hayley Ellis vanishes without a trace after finishing her late-night shift at the local diner, leaving her sister Chelsy frantic with worry. Convinced this isn’t a simple case of running away, Chelsy battles a skeptical police force, desperate to make them see the terrifying truth: Hayley has been abducted. As every passing hour diminishes the chances of finding Hayley alive, Chelsy takes matters into her own hands, determined to uncover what happened to her sister.

Chelsy’s relentless investigation soon makes her a target. She uncovers shocking secrets about Hayley’s hidden life, realizing her sister was entangled in something far more dangerous than anyone knew. Now, the same captor who took Hayley is hunting Chelsy, determined to silence both sisters forever. In a deadly race against time, Chelsy must expose the truth and save her sister before the clock runs out… and the killer catches them both. Don’t miss the chilling premiere of My Sister’s Double Life on Sunday, June 29, 2025, only on Lifetime.

My Sister’s Double Life Cast list:

1. Amalia Williamson as Hayley Ellis

Amalia Williamson has steadily built her career with roles in television series like “Family Law” and “Riverdale,” showcasing her ability to portray complex, relatable young women. Her film work includes projects like “Anything for Jackson” and “The Hex,” demonstrating her versatility across genres, from drama to supernatural horror. This range prepares her for the nuanced role of Hayley.

As Hayley Ellis, Williamson embodies the vulnerable yet enigmatic sister whose disappearance sets the harrowing plot in motion. Her character’s “double life” suggests hidden depths and secrets Chelsy must uncover, making Williamson’s performance crucial to the film’s central mystery and emotional core.

2. Anna Hopkins as Sheryl

Anna Hopkins is known for compelling roles in acclaimed sci-fi and fantasy series, including recurring parts in “The Expanse” (as Monica Stuart) and “Shadowhunters” (as Lydia Branwell). Her film credits include “Below Her Mouth” and “Breakout,” highlighting her talent for both intense drama and action-oriented roles. Hopkins consistently brings intelligence and presence to her characters.

Playing Sheryl, Hopkins likely portrays a significant figure connected to Hayley or Chelsy – perhaps a friend, co-worker, or someone privy to Hayley’s secrets. Given Hopkins’ history with complex characters, Sheryl could be an ally, a suspect, or possess crucial information central to the sisters’ peril.

3. Nathan Dales as Josh

Nathan Dales is best recognized for his long-running, fan-favorite role as Daryl on the hit Canadian comedy series “Letterkenny,” showcasing his impeccable comedic timing and everyman charm. Beyond comedy, he has appeared in dramas like “Wynonna Earp” and films such as “Sadie’s Last Days on Earth,” proving his adaptability.

As Josh, Dales likely steps into a more dramatic role, possibly portraying Chelsy’s partner, Hayley’s boyfriend, or a close friend caught in the terrifying ordeal. His character is expected to provide support, skepticism, or potentially become entangled in the dangerous web surrounding the sisters’ fates.

4. Sarah Grey as Chelsy

Sarah Grey has established herself as a leading presence in genre television, starring as Kate in “DC’s Legends of Tomorrow” and appearing in shows like “Power Rangers RPM,” “Arrow,” and “The Order.” Her film work includes the thriller “The Invisible” and the fantasy adventure “The Secret Society of Second-Born Royals,” showcasing her action and dramatic chops.

As Chelsy, the determined sister at the heart of the storm, Grey anchors the film. Her experience playing strong, resourceful characters makes her ideal to portray Chelsy’s transformation from concerned sister to a woman fighting for survival against a relentless and deadly adversary.

5. Cody Ray Thompson as Tim

Cody Ray Thompson has appeared in a variety of television series, including guest spots on “Supernatural,” “The Good Doctor,” “Riverdale,” and “Nancy Drew.” His film credits range from indie dramas like “Broken Mile” to thrillers like “The Unhealer,” demonstrating his capacity for diverse and often intense roles.

Cast as Tim, Thompson’s character could occupy several key positions – potentially Hayley’s secretive love interest, a suspicious co-worker at the diner, or someone directly linked to the dangerous double life she led. His presence adds another layer of potential threat or crucial insight.

6. Maia Alvina as Officer Simms

Maia Alvina brings experience from recurring roles on series like “Snowpiercer” (as Jess) and “The Good Doctor,” often portraying grounded, professional characters. She has also appeared in films such as “The Predator” and “To All the Boys: P.S. I Still Love You,” building a solid resume in both drama and action.

Playing Officer Simms, Alvina steps into the role of law enforcement, likely one of the initial responders to Hayley’s disappearance. Her character represents the official investigation Chelsy must convince, potentially evolving from skepticism to a vital ally as the case’s severity becomes undeniable.

7. Gabriel Davenport as Leo

Gabriel Davenport has appeared in guest roles on popular shows like “Virgin River,” “Firefly Lane,” and “The Flash.” His film work includes projects such as “The Marine 6: Close Quarters” and “Noelle,” showcasing a range from action to lighter fare. He often portrays characters with a quiet intensity or underlying complexity.

As Leo, Davenport could play a pivotal role in Hayley’s hidden world – perhaps a friend with secrets, a romantic connection, or someone whose involvement triggers the abduction. His character is likely key to unraveling the mystery of Hayley’s double life.

8. Jay Wong as Officer

Jay Wong has built a career with numerous guest appearances on procedurals and dramas, including “Supernatural,” “Lucifer,” “The Good Doctor,” “Bones,” and “iZombie.” He frequently portrays authoritative figures, law enforcement, or professionals, bringing credibility to supporting roles.

Cast as an Officer, Wong embodies another member of the police force Chelsy must contend with. His character adds to the procedural element, representing the institutional response to Hayley’s disappearance and Chelsy’s increasingly desperate pleas for help.

9. Rod Wilson as Tony

Rod Wilson is a character actor known for roles in films like “The Age of Adaline” and “The Interview,” and TV series including “Supernatural,” “The Man in the High Castle,” and “Riverdale.” He often portrays blue-collar characters, authority figures, or individuals with distinct personalities.

Playing Tony, Wilson likely brings a specific presence to the diner setting or the sisters’ community. He could be Hayley’s boss, a regular customer, or a neighbor whose observations might hold clues to her disappearance and hidden activities.

10. Watson Rose as Miranda

Watson Rose has appeared in television shows like “The Good Doctor” and “Riverdale,” as well as films including “To All the Boys: Always and Forever.” She often portrays characters with a youthful or approachable demeanor, fitting for supporting roles within community or social settings.

As Miranda, Rose’s character is likely a friend, acquaintance, or co-worker of either Hayley or Chelsy. She could serve as a confidante, a source of gossip, or someone inadvertently connected to the dangerous situation unfolding around the sisters.

11. Dylan Mask as Cam

Dylan Mask has credits including roles in “Riverdale” and “The Good Doctor,” similar to several castmates, indicating a strong presence in the Vancouver filming scene. He often appears in supporting roles that add texture to the ensemble.

Playing Cam, Mask’s character adds another piece to the puzzle surrounding Hayley’s life and disappearance. He could be a friend, a potential suspect, or someone linked to the captor, contributing to the film’s suspense and the network of relationships Chelsy must navigate.

Prepare for Non-Stop Suspense! My Sister’s Double Life promises shocking twists, relentless tension, and a powerful story of sisterly devotion in the face of unspeakable danger. Tune in for the premiere on Sunday, June 29, 2025, only on Lifetime!