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Season guide

Only Murders in the Building: Season 3

10 episodes Premiered Aug 8, 2023 Updated Sep 21, 2026

Only Murders in the Building Season 3 continues the overarching saga across 10 episodes.

Previously on Only Murders in the Building

Season 3 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 2.
  • 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 3 continues the overarching saga across 10 episodes.

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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

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Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

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

30%
70%
Mytharc (3): Crucial lore & season climaxes
Core (7): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

The Show Must...

Aug 8, 2023

Curtain up on Season 3! And Leading Man down! After Ben Glenroy's collapse on stage, Charles, Oliver & Mabel piece together the show’s first days with a suspicious cast & crew to d

S3·E2 Core

The Beat Goes On

Aug 8, 2023

Mabel, Oliver & Charles attend Ben’s lavish memorial full of fans and those with more dubious motives. As the actor's sudden death is mourned, Oliver works to revive his shaky Broa

S3·E3 Core

Grab Your Hankies

Aug 15, 2023

Oliver races to bring new life to his show as Mabel’s investigation into the actual murder collides with a surprising ally. Charles bonds with the cast, and Loretta proves her voic

S3·E4 Core

The White Room

Aug 22, 2023

Charles’s stage fright reaches unimaginable heights, involving a break from reality and multiple baby dolls. Mabel is confronted by a mysterious individual from her past with a piv

S3·E5 Core

Ah, Love!

Aug 29, 2023

Date night! New York proves itself both a jewel box and a fish tank of romance as Charles, Mabel & Oliver take their relationships to the next stage. And dating can reveal many hid

S3·E6 Core

Ghost Light

Sep 5, 2023

All roads lead the trio back to the Goosebury Theater during a nerve-rattling thunderstorm. With Howard as their jittery guide, they track a legendary ghost who’s haunted the theat

S3·E7 Core

CoBro

Sep 12, 2023

Charles finds an unexpected source for a major clue. A Broadway icon comes knocking at Oliver’s door. And Mabel forms an alternate trio to pursue a lead that sheds light on Ben’s b

S3·E8 Core

Sitzprobe

Sep 19, 2023

On the day of the show’s most critical rehearsal, the pressure mounts. A familiar official returns to upend the case, Loretta’s complex past threatens to upend all else and Charles

S3·E9 Mytharc

Thirty

Sep 26, 2023

The trio have amassed a plethora (oh yes, a plethora) of clues, suspects & theories but find no concrete answers about Ben’s murder. They devise a peculiar method of throwing thems

S3·E10 Mytharc

Opening Night

Oct 3, 2023

Curtain call on Season 3! Charles, Mabel & Oliver race to entrap the killer on Opening Night. As the musical thrills its Broadway audience, the trio brave further twists & turns fr