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Season guide

Only Murders in the Building: Season 4

10 episodes Premiered Aug 27, 2024 Updated Sep 21, 2026

Only Murders in the Building Season 4 continues the overarching saga across 10 episodes.

Previously on Only Murders in the Building

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • Picks up essential narrative continuity directly following the events of Only Murders in the Building Season 3.
  • Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.

Season overview

Only Murders in the Building Season 4 continues the overarching saga across 10 episodes.

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Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

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Mytharc (4): Crucial lore & season climaxes
Core (6): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

Once Upon a Time in the West

Aug 27, 2024

Charles, Oliver & Mabel are whisked to Los Angeles where a legendary film studio intends to adapt their podcast. However, Hollywood's glitz is overshadowed by a stunning clue about

S4·E2 Core

Gates of Heaven

Sep 3, 2024

Mabel & Oliver begin investigating Arconia's West Tower and get trapped inside an ominous game. Meanwhile, Charles is visited by two individuals from his complex past.

S4·E3 Core

Two for the Road

Sep 10, 2024

Charles, Oliver & Mabel begrudgingly pair off with new investigators... actors Eugene Levy, Zach Galifianakis & Eva Longoria.

S4·E4 Core

The Stunt Man

Sep 17, 2024

Charles, Oliver & Mabel delve into the particular universe of stunt people. They encounter a suspect with an incredibly... familiar... face.

S4·E5 Core

Adaptation

Sep 24, 2024

The trio face off against a collection of individuals who deceive, manipulate, and threaten as second nature - a Hollywood cast & crew.

S4·E6 Core

Blow-Up

Oct 1, 2024

A documentary film is made by The Brothers Sisters.

S4·E7 Core

Valley of the Dolls

Oct 8, 2024

Terrified by a threat inside the Arconia, the trio race out of the city. A member of Charles' family provides refuge and yet, this safe house proves to be anything but.

S4·E8 Mytharc

Lifeboat

Oct 15, 2024

Charles, Oliver & Mabel combine forces with the film actors in an epic showdown against the Westies. You can't handle the truth.

S4·E9 Mytharc

Escape from Planet Klongo

Oct 22, 2024

Seeking a critical clue, Charles, Oliver & Mabel must infiltrate a film set to get the real "background" on why Sazz was killed.

S4·E10 Mytharc

My Best Friend's Wedding

Oct 29, 2024

The final answers to our season are revealed - but not before the trio faces mortal danger and an Arconia wedding.