Whatever the Case May Be - S1-E12
Continuity mistake: When Kate and Sawyer go underwater to retrieve the case, in a close-up it is easy to see that the male corpse is barefoot. But in a following close-up, when Sawyer swims up with the Halliburton case - just as the words "Production Designer Carlos Barbosa" appear onscreen - in this specific shot the man is actually wearing a black shoe on his left foot. (00:06:15)