: The episode features a subplot where Wilfred attempts to rid himself of a "neighborhood pest".

: The episode was written by Reed Agnew and Eli Jorné.

: Like much of the first season, the episode balances suburban mundane settings with the surreal presence of Wilfred, often utilizing high-contrast lighting or sunset backdrops for emotional weight.

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: During the episode, Wilfred sends a message to Angelique in Ryan's name, specifically mentioning the post office . Episode Details Original Air Date : August 25, 2011.

: Wilfred uses Ryan's "habit of isolating" as a tool. The episode title, " Doubt ," refers to the uncertainty Wilfred sows in Ryan's mind about his own sanity and the intentions of those around him.