First, we like the word skulduggery.
Second, "hints" is an understatement. Like "man playing ukelele" or "Hitler giving a talk." At least the last two are adequately descriptive. "Hints" of skulduggery? Please.
Wigs, fake beards, stolen passpoerts, 11-person team? I don't know the word for it, but "hints" seems a little off the mark.