The Arconia has long been more than just a luxury Upper West Side apartment building; it is a revolving door of mystery, eccentric personalities, and some of the finest acting talent in modern television. Only Murders in the Building (OMITB) has mastered the art of the ensemble cast, blending the timeless comedic chemistry of Hollywood legends with a continuous stream of A-list guest stars. Whether it is the core trio investigating a fresh grisly death or a surprise cameo from a cinematic icon, the cast remains the heartbeat of the series.

The Inseparable Core Trio of the Arconia

At the center of every investigation are three strangers who bonded over a shared obsession with true crime. The dynamic between Charles-Haden Savage, Oliver Putnam, and Mabel Mora is the foundation upon which the show’s success is built.

Steve Martin as Charles-Haden Savage

Charles-Haden Savage is the quintessential semi-retired actor, forever tethered to his glory days as the lead in the 1990s detective series Brazzos. Steve Martin portrays Charles with a delicate balance of social awkwardness and dry wit. Throughout the seasons, Charles has evolved from a lonely man hiding behind his famous catchphrases—"This sends the investigation in a whole new direction!"—to a deeply loyal friend who is willing to step out of his comfort zone. His character’s growth is often mirrored in his relationships, from the tragic loss of his stunt double Sazz Pataki to his complex romance with the murderous Jan Bellows.

Martin Short as Oliver Putnam

Oliver Putnam is the flamboyant, struggling Broadway director whose theatricality often threatens to overshadow the actual mystery. Martin Short brings a relentless energy to the role, characterized by Oliver’s love for dips, his penchant for name-dropping celebrities, and his unwavering belief that every murder is just a theatrical production waiting to happen. Oliver’s arc frequently touches on his desperate need for professional validation and his deep connection to his son, Will. Despite his chaotic nature, Oliver’s intuition as a director often provides the trio with the narrative breakthroughs they need to solve a case.

Selena Gomez as Mabel Mora

Mabel Mora serves as the grounding force for the trio. As a young artist with a mysterious past and a sharp sense of style, Mabel represents the bridge between the digital-savvy younger generation and the old-school sensibilities of Charles and Oliver. Selena Gomez delivers a deadpan performance that perfectly complements the high-energy comedy of her co-stars. Mabel’s journey has been one of reclaiming her identity, moving from a haunted resident living in her aunt’s unfinished apartment to a confident investigator who isn't afraid to confront the darkness lurking in the building's hallways.

The Resident Ensemble of the Arconia

The Arconia is home to a colorful array of supporting characters who have become essential to the show's fabric. These recurring residents provide the cultural backdrop of the Upper West Side and often serve as the most likely suspects.

Michael Cyril Creighton as Howard Morris

Originally a recurring neighbor, Howard Morris has grown into a fan-favorite main character. As the building’s resident cat lover and gossip enthusiast, Howard is frequently involved in the trio’s podcasting efforts. Michael Cyril Creighton’s portrayal of Howard is filled with endearing neuroticism, whether he is mourning one of his many cats or desperately trying to get a part in one of Oliver’s ill-fated productions. In Season 5, Howard’s role becomes even more pivotal as he navigates the changing dynamics of the building staff.

Jackie Hoffman as Uma Heller

Uma Heller is the quintessential cynical New Yorker. With a sharp tongue and a permanent scowl, Uma provides the perfect counterpoint to the trio’s optimism. Her long-standing friendship with the late Bunny Folger and her obsession with high-end collectibles make her a constant presence in the building’s common areas. Jackie Hoffman’s performance ensures that Uma remains one of the most memorable and formidable residents of the Arconia.

The Tragic Loss of Lester the Doorman

Teddy Coluca portrayed Lester, the dedicated and soft-spoken doorman of the Arconia, for several seasons. Lester was the silent observer of all the building’s secrets, having worked there since the early 1990s. The Season 5 storyline centers heavily on the shocking murder of Lester, whose body is discovered in the Arconia fountain. This event serves as the catalyst for the new season, forcing the trio to look into Lester’s past, including his ties to the Caccimelio crime family and his mentor, George.

The Star-Studded Newcomers of Season 5

Each new season of Only Murders in the Building brings a fresh wave of high-profile talent, and Season 5 is perhaps the most ambitious yet. The casting choices for this season reflect a shift toward organized crime and high-stakes corporate power.

Téa Leoni as Sofia Caccimelio

Téa Leoni joins the cast as Sofia Caccimelio, the wife of mobster Nicky "The Neck" Caccimelio. Sofia is a powerful and mysterious figure who initially approaches the trio to investigate her husband’s disappearance. Her character introduces a new layer of danger to the Arconia, as her family’s dry-cleaning business serves as a front for more illicit activities. Leoni brings a sophisticated edge to the role, challenging the trio to handle a case that involves real-world criminals rather than just eccentric neighbors.

Bobby Cannavale as Nicky Caccimelio

As the missing (and eventually deceased) mobster Nicky Caccimelio, Bobby Cannavale plays a character whose influence looms large over the Season 5 mystery. Nicky’s gambling addiction and his secret casino underneath the Arconia provide the clues that Charles, Oliver, and Mabel must decipher. Cannavale’s intensity adds a gritty realism to the show’s comedic tone.

Renée Zellweger as Camila White

Academy Award winner Renée Zellweger enters the fray as Camila White, a powerful hotelier and one of the secret billionaires involved in the Wondify podcasting deal. Camila is part of a trio of wealthy elite—alongside Bash Steed and Jay Pflug—who attempt to manipulate the podcast for their own ends. Zellweger’s presence adds significant star power and a new level of corporate intrigue to the narrative.

Christoph Waltz as Sebastian "Bash" Steeg

Christoph Waltz portrays Bash Steeg, a tech mogul with a chillingly calm demeanor. As one of the billionaires who sets up a legal trap for the trio, Bash represents the untouchable elite of New York City. Waltz, known for his ability to play menacing yet charming characters, is the perfect foil for Oliver’s flamboyant energy.

Logan Lerman as Jay Pflug

Logan Lerman appears as Jay Pflug, a pharmaceutical tycoon heir who is missing a finger—a key piece of evidence in the Season 5 murder investigation. Jay’s interactions with Mabel reveal the complexities of trust and the isolation that comes with extreme wealth. Lerman brings a vulnerability to the role that makes the audience question whether he is a cold-blooded killer or just another pawn in a much larger game.

The Law and the Media

Investigation requires both the official hand of the law and the unofficial meddling of the media. These characters often act as both obstacles and allies to the trio.

Da'Vine Joy Randolph as Detective Donna Williams

Detective Williams is the voice of reason in a building full of chaos. As an NYPD detective who is constantly exasperated by the trio’s amateur sleuthing, she has nevertheless formed a grudging respect for their results. Da'Vine Joy Randolph plays Williams with a brilliant "no-nonsense" attitude, providing some of the show’s most grounded and hilarious moments, especially as she balances her career with the demands of motherhood.

Tina Fey as Cinda Canning

Cinda Canning is the ruthless queen of true-crime podcasting. As a rival to Charles, Oliver, and Mabel, Cinda represents the commercialized side of the genre, where "the story" often matters more than the truth. Tina Fey’s portrayal of Cinda is a biting satire of media personalities, highlighting the competitive and sometimes unethical nature of modern podcasting. Her eventual demise at the gates of the Arconia serves as the massive cliffhanger setting up the show’s future.

Iconic Guest Stars from Previous Seasons

The legacy of OMITB is defined by its ability to attract the biggest names in Hollywood for significant guest arcs. These performances have often redefined the stakes of each season.

Meryl Streep as Loretta Durkin

Meryl Streep’s arrival in Season 3 as the struggling actress Loretta Durkin was a landmark moment for the series. Her character’s blossoming romance with Oliver Putnam provided a heartfelt emotional core to the season. Loretta’s journey from a "never-was" actress to a Broadway star, and eventually a recurring presence in Season 4 and 5, allowed Streep to showcase both her comedic timing and her dramatic depth.

Paul Rudd as Ben Glenroy and Beyond

Paul Rudd initially joined the cast as Ben Glenroy, the egotistical action star whose death on opening night drove the Season 3 plot. However, Rudd’s involvement didn't end there. In subsequent seasons, he has returned in surprising ways, including playing Ben’s stunt double Glen Stubbins and even providing the voice for L.E.S.T.R., the building's new robotic doorman in Season 5. Rudd’s versatility and likability make him a perfect fit for the show’s quirky universe.

Jane Lynch as Sazz Pataki

Jane Lynch was unforgettable as Sazz Pataki, Charles’s former stunt double. Sazz was more than just a lookalike; she was a charismatic, adventurous spirit who often understood Charles better than he understood himself. Her murder at the end of Season 3 and the subsequent investigation in Season 4 deeply affected the core trio, particularly Charles, making her one of the most impactful guest stars in the series' history.

Nathan Lane as Teddy Dimas

Nathan Lane’s performance as Teddy Dimas, the deli mogul with a dark secret, earned him critical acclaim. Teddy’s complex relationship with his deaf son, Theo (played by James Caverly), added a layer of Shakespearean tragedy to the show’s first two seasons. Lane’s ability to pivot from menacing villainy to pathetic desperation was a masterclass in acting.

A Look Toward the Future: The Season 6 London Cast

As the series prepares to move its setting across the Atlantic, the cast for Season 6 promises a whole new flavor of mystery. With the trio heading to London to investigate the death of Cinda Canning, a fresh batch of British talent has been confirmed.

New Additions for the London Arc

The move to the UK introduces a stellar lineup of actors, many of whom are icons of British television:

  • David Tennant: Known for his incredible range, Tennant’s role is highly anticipated as the trio navigates the streets of London.
  • Nicola Coughlan: The Bridgerton star brings her unique charm to the cast, likely playing a pivotal role in the European investigation.
  • Jodie Whittaker: The former Doctor Who lead joins the ensemble, furthering the show's tradition of casting legendary genre actors.
  • Jim Broadbent and Jennifer Saunders: These comedy veterans will undoubtedly provide the high-level wit that fans expect from OMITB.

This shift in location and cast suggests that the series is evolving, moving beyond the walls of the Arconia while maintaining the core chemistry that makes it special.

The Casting Strategy Behind the Success

The success of Only Murders in the Building lies in its casting philosophy: mixing legendary veterans with contemporary stars and character actors who bring authenticity to the New York setting. John Hoffman and the production team have created a world where Meryl Streep can share a scene with a TikTok star or a Broadway veteran, and it all feels perfectly cohesive.

The show treats its guest stars not just as cameos, but as integral pieces of a complex puzzle. Whether they are playing a version of themselves (like Sting or Amy Schumer) or a fully realized character, every actor contributes to the overarching theme of the show: that everyone has a secret, and everyone is a suspect.

Summary of the Only Murders in the Building Ensemble

The Only Murders in the Building cast is a masterclass in ensemble building. From the foundational trio of Steve Martin, Martin Short, and Selena Gomez to the rotating door of A-list guest stars like Meryl Streep and Paul Rudd, the show consistently delivers top-tier performances. As the series moves into its fifth season with newcomers like Renée Zellweger and Christoph Waltz, and looks forward to a London-based sixth season, the cast continues to be the primary reason audiences return to the mystery time and time again.

Frequently Asked Questions about the OMITB Cast

Who are the main three actors in Only Murders in the Building? The main trio consists of Steve Martin as Charles-Haden Savage, Martin Short as Oliver Putnam, and Selena Gomez as Mabel Mora.

Is Meryl Streep a permanent cast member? Meryl Streep joined as a special guest star in Season 3 as Loretta Durkin and has returned as a recurring character in Seasons 4 and 5.

Who is the new cast member in Only Murders in the Building Season 5? Season 5 features several high-profile additions, including Renée Zellweger as Camila White, Christoph Waltz as Bash Steeg, Téa Leoni as Sofia Caccimelio, and Logan Lerman as Jay Pflug.

Which actors are joining for the London-based Season 6? Season 6 will feature a host of British stars, including David Tennant, Nicola Coughlan, Jodie Whittaker, Jim Broadbent, and Jennifer Saunders.

Why did Paul Rudd play two different characters? Paul Rudd originally played Ben Glenroy in Season 3. He returned in Season 4 to play Glen Stubbins (Ben’s stunt double) and voiced the robot L.E.S.T.R. in Season 5, showcasing the show's love for recurring actors in creative new roles.