Danny reports to Steve that Butrell showed up at Charlie's house without the bag. Steve remarks that he can't believe that, since they were tailing him, and had him with the bag at three of the places he stopped at. If this is true, then Five-O wasn't doing their job. They would have seen the con go down in broad daylight.
After the Lincoln blows up the wheel among the debris is from a Mercury.
It is implausible that the Lovejoys' daughter would be allowed inside the sleazy waterfront bar.
In the opening scene at HQ, McGarrett refers to Charlie, first, as "Charlie Walters" and soon after as "the kingpin himself, Charlie Walker".