In the shocking Season 5 finale of Only Murders in the Building , which airs Tuesday (October 28) on Hulu , the mystery of doorman Lester Coluca’s ( Teddy Coluca ) death is finally solved, and the way the show sets up a potential Season 6′s murder is totally wild.

The episode sends Selena Gomez ‘s Mabel, Oliver ( Martin Short ) and Charles ( Steve Martin ) deep into the hidden casino beneath the Arconia, where the investigation finally comes together.

After weeks of suspecting billionaire owners Bash Steed, Camila White and Jay Pflug, the trio confirms that none of them are missing a finger, causing Mabel to suspect someone else entirely.

The killer turns out to be Mayor Beau Tillman ( Keegan-Michael Key ), who had been secretly involved with Sofia Caccime

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