I Know Who Did It

I Know Who Did It is the tenth and final episode of the second season of Only Murders in the Building and the twentieth episode overall. It aired August 23, 2022.


One question remains: Who did it??? Oh, who are we kidding -- there's a few more questions raised, too.[1]


Becky gives an overview of her history and her upbringing, existing of a miserable life lived in Oklahoma, revolving around her alcoholic father and abusive, prevert of a boss, who also happens to be the mayor of the town. After listening to one of Cinda Canning's podcasts one day, Becky decides that she must disappear from Oklahoma to improve her quality of life. Afterwards, she visits Cinda and asks for a job, whilst also giving her the story of Becky Butler's disappearance. For Cinda, the podcast becomes a raging success and she hires Becky as her personal assistant.

Following on from the success of the All Is Not OK in Oklahoma, Cinda and Becky talk about possible pitches for new podcasts. Cinda tells her that the requirement is that there is a murder that she can solve and produce a podcast tin the process. Becky, however, proposes the disappearance of the Rose Cooper painting as a possibility, but Cinda shoots her down immediately.

Back in the present, Mabel concludes that Cinda is the criminal mastermind that they've been looking for. Mabel, Charles, and Oliver devise a plan to catch Cinda before the finale of her podcast is released. Mabel, however is still confused about the relation of "14", and "Savage", and how they connect to Cinda.

The three investigators meet with Becky at the Pickle Diner, they ask Becky for help getting Cinda to confess, but Becky only has useless facts to offer, such as Cinda's hate for the insides of a tomato. Before the conversation can continue, however, Becky receives a call from Cinda and has to leave; she orders a liverwurst and marmalade sandwich to go.

Ivan tells the table that Bunny wasn't a fan of the sandwich choice, but Mabel receives a call from Detective Williams before she can comment. Williams tells Mabel that she knows whose fingerprints were on the murdr weapon, thus, they have found their killer. Meanwhile, Mabel finally realises the connection between "14" and "Savage", by looking at the Pickle Diner's menu.


Main Cast[edit]

Guest starring[edit]

  • Vanessa Aspillaga as Ursula
  • Ryan Broussard as William Putnam
  • Zoe Colletti as Lucy
  • Todd Conner as Mayor Tipton
  • Michael Cyril Creighton as Howard Morris
  • Tina Fey as Cinda Canning
  • Jackie Hoffman as Uma Heller
  • Da'Vine Joy Randolph as Detective Williams
  • Paul Rudd as Ben Glenroy
  • Michael Rapaport as Detective Kreps
  • Daniel Oreskes as Marv
  • Jason Veasey as Jonathan
  • Ariel Shafir as Ivan
  • Andrea Martin as Joy (Brazzos Hair / Makeup Lady)
  • Ade Otukoya as Brazzo's Director
  • Margaret Reed as Stage Manager
  • Damani Varnado as Liam Grimsby


  • Bob Ari as Becky's Dad
  • Kathryn Boswell as Reporter
  • Teddy Coluca as Lester




  1. Official Hulu Synopsis.

See More[edit]

Season 1 "True Crime" · "Who Is Tim Kono?" · "How Well Do You Know Your Neighbors?" · "The Sting" · "Twist" · "To Protect and Serve" · "The Boy from 6B" · "Fan Fiction" · "Double Time" · "Open and Shut"
Season 2 "Persons of Interest" · "Framed" · "The Last Day of Bunny Folger" · "Here's Looking at You" · "The Tell" · "Performance Review" · "Flipping the Pieces" · "Hello, Darkness" · "Sparring Partners" · "I Know Who Did It"

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