There’s a great pun in 1.05 as someone is stabbed through the head with a poker – a genuine “poker face”.
Unsurprisingly, finale “The Day In Question” is the show’s best hour, even though most of the first third is taken up with Jake and Sadie running endlessly towards the Texas Book Depository.
The final scene, but that’s spoilery, so... In 1.04 Jake recites the plot of The Godfather to expand a lie about him being in Witness Protection.
When Jake is asked if he served in the war, he replies that he did two tours in Korea. “What unit?” says his friend. Jake replies: “M*A*S*H 4077th.”
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At the foot of the stairs in the Book Depository is a wee King homage: the words “RedRum” from The Shining.