Cast of Midnight Mass: Actors and Roles (2021 Netflix)

Mike Flanagan’s 2021 Netflix miniseries Midnight Mass assembles 37 credited cast members on fictional Crockett Island, bringing together recurring collaborators and striking newcomers under Flanagan’s direction.

Creator: Mike Flanagan · Release Year: September 24, 2021 · Platform: Netflix · Episodes: 7 · Top Cast: Kate Siegel, Zach Gilford, Kristin Lehman

The table below consolidates essential production facts verified across multiple sources.

What is the cast of Midnight Mass?

Midnight Mass assembles a roster of 37 credited cast members across its seven episodes, headlined by Zach Gilford as Riley Flynn and Kate Siegel as Erin Greene (both verified on ScreenRant character guide). The series marks a reunion for Flanagan and Siegel, who previously worked together on Hush and The Haunting of Hill House (as documented by ScreenRant character guide). Gilford, best known for playing quarterback Matt Saracen in Friday Night Lights, brings Riley to life as a former stock trader who served four years in prison for manslaughter (Vague Visages character analysis).

Kate Siegel as Erin Greene

Kate Siegel plays Erin Greene, a schoolteacher and Riley’s high school love interest, on Crockett Island (per ScreenRant character guide). Her connection to Flanagan runs deep—she’s appeared in multiple Flanagan projects including Hush and The Haunting of Hill House (noted by ScreenRant character guide). In Midnight Mass, Erin becomes pregnant and develops a contagion theory alongside Dr. Sarah Gunning.

Zach Gilford as Riley Flynn

Zach Gilford portrays Riley Flynn, who returns to Crockett Island after serving a four-year prison sentence for manslaughter in a drunk driving incident (documented by Vague Visages character analysis). Riley represents the central protagonist of the series, with his atheism and troubled past driving much of the narrative tension. His backstory connects him to the island’s tight-knit Flynn family.

Kristin Lehman as Annie Flynn

Kristin Lehman plays Annie Flynn, Riley’s devout mother who guides him after his release from prison (per Vague Visages character analysis). Annie represents the spiritual heart of the Flynn family, navigating her son’s return to the island with faith as her compass.

Samantha Sloyan as Bev Keane

Samantha Sloyan delivers a memorable turn as Bev Keane, a zealous Christian leader and teacher who becomes a central antagonist in the series (documented by Vague Visages character analysis). Sloyan previously collaborated with Flanagan on The Haunting of Hill House and has appeared in Shonda Rhimes productions like Scandal (per Marie Claire actor profile). Bev’s influence over the island’s religious community creates significant conflict throughout the series.

Cast of Midnight Mass Monsignor Pruitt

Hamish Linklater plays the dual role of Father Paul Hill and Monsignor Pruitt in Midnight Mass—a central casting choice documented across Wikipedia production details and Vague Visages character analysis. The character’s connection to the angel plot drives the series’ central mystery.

Actor background

Hamish Linklater is a seasoned actor with credits spanning major television series including Fargo (noted by Marie Claire actor profile). In Midnight Mass, he portrays a priest who replaces Monsignor Pruitt at St. Patrick’s Catholic Church and appears to perform healings that draw the island’s attention.

Character role

Father Paul Hill arrives at St. Patrick’s Catholic Church on Crockett Island and becomes central to the series’ religious tensions. His apparent ability to heal Leeza Scarborough during a Sunday communion service marks a turning point in the community’s faith journey (per Vague Visages character analysis).

Cast of Midnight Mass old lady

Alex Essoe plays Mildred Gunning in Midnight Mass, portraying Dr. Sarah Gunning’s mother who lives with dementia (per Wikipedia cast list). Her casting adds emotional weight to Dr. Gunning’s storyline and represents one of the series’ most heartbreaking character arcs.

What this means: Mildred’s dementia becomes a narrative anchor that makes the supernatural elements feel grounded in real family struggles, elevating the character beyond a simple plot device.

Cast of Midnight Mass Mayor

Michael Trucco portrays Wade Scarborough, the mayor of Crockett Island and Leeza’s father (documented by Wikipedia cast list). Wade’s position as mayor places him at the center of the island’s response to the mysterious events unfolding in the series.

Family dynamics

Wade’s daughter Leeza Scarborough, played by Annarah Cymone, was formerly wheelchair-bound before Father Paul’s apparent healing during Sunday communion (per Vague Visages character analysis). Leeza’s mother Dolly is played by Crystal Balint, making the Scarborough family one of the series’ most prominent fictional families outside the Flynns.

The pattern: Trucco’s mayor embodies institutional authority that slowly crumbles as Bev Keane’s religious faction gains influence, illustrating how community leadership can become irrelevant when faith-based movements seize control.

Cast of midnight mass vampire

The creature in Midnight Mass that Monsignor Pruitt encounters is not confirmed to be a vampire in traditional horror terms, but rather is interpreted as an angelic being through Pruitt’s religious framework (per Midnight Mass fandom wiki overview). This ambiguity represents the series’ central thematic device.

Angel creature actor

The creature itself is portrayed through practical effects and visual design rather than traditional character casting. The fandom wiki notes that the “angel” is actually the series’ vampire-like creature, with Pruitt believing he is witnessing a divine messenger. Bev Keane’s influence leads the community to interpret the creature’s blood as a path to transcendence.

The implication: Flanagan uses the vampire-angel ambiguity to critique how religious interpretation can transform literal poison into perceived salvation, making Bev Keane’s influence the true horror of the series.

For viewers drawn to Midnight Mass, the cast’s interconnected history with Flanagan creates a layer of investment beyond standard horror ensemble work. The implication: when you recognize Kate Siegel or Samantha Sloyan, you’re watching actors who understand Flanagan’s particular brand of slow-burn dread and deliberate character development. For horror fans specifically, Rahul Kohli’s casting as Sheriff Hassan represents a deliberate choice to add religious and cultural complexity to the island’s tensions—his Muslim law enforcement officer provides the skeptical outsider perspective the story needs.

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Zach Gilford’s Riley and Kate Siegel’s Erin lead the ensemble, as this in-depth cast breakdown further explores with behind-the-scenes insights on Hamish Linklater’s Pruitt.

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