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Spoiler warning: This reveals a central mystery from the season-one finale of MobLand. The Harrigan “rat” working with Richie is O’Hara Delaney, the family’s lawyer, played by Lisa Dwan. In “The Beast in Me,” Harry identifies her and uses her to manipulate Richie into an ambush.
Who is the Harrigan rat in MobLand?
It is O’Hara Delaney. Paramount+’s season-one finale explainer identifies the family lawyer as the traitor working with Richie and says Harry puts the pieces together.
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![Mobland: Season One [DVD]](https://m.media-amazon.com/images/I/410M135Ov+L._SL160_.jpg)
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Mobland: Season One [DVD] | $17.94 | Buy on Amazon |
What does Harry do with the discovery?
Harry turns O’Hara’s position into leverage: he uses her to manipulate Richie into a bloody ambush. That is the key consequence of the reveal established by Paramount+’s finale explainer; it does not, by itself, settle every question about what O’Hara may say or intend in a particular exchange.
When does the reveal happen?
The identity is revealed in “The Beast in Me,” the season-one finale, which premiered June 1, 2025. Paramount+ lists the series and its season-one episodes on its MobLand page; catalog availability can vary by region and change over time.
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Is “Rat Trap” the episode that names the rat?
No. Paramount+’s listing for “Rat Trap” describes Conrad asking Jan for a favor and Kevin confessing something to Harry. The explicit answer to who is betraying the Harrigans comes in the finale.
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