When Elin first wakes up and Lassiter shows her the pictures of the dead men that were found, she refers to the blond man as Cory, and the dark-haired man as Erik. For the rest of the episode, their names are reversed, and the blond man is referred to as Erik, while the dark-haired man is referred to as Cory.
After Juliet throws water on Shawn he is drenched. As Shawn is telling Gus what Juliet knows and they are leaving the wedding, he is completely dry, shirt pressed.
In the opening credits, guest star Rose Abdoo's name is misspelled "Adboo".
Gold likes to be an element and is rather unreactive. This makes it very safe and edible at 24 carats, so Gus's allergic reaction to it is very unlikely.
When Shawn uses Siri on his phone, the screen displays the home screen instead of the gray screen.
The dog is referred to as "he" throughout the episode, but is obviously female.