They started showing up in Philadelphia, these odd tiles carrying cryptic messages such as: Toynbee idea/in Kubrick's 2001/resurrect dead/on planet Jupiter. Soon, they appeared in other cities; some carried peripheral ramblings that suggested either a paranoid mind or master prankster was behind it all. Documentarian Jon Foy spent a decade following both the phenomenon and those who've tried cracking the code, and while his film offers little in the way of answers, it says volumes about delusional obsessives. Devote your every waking hour to hunting down what may be an elaborate art-project-cum-hoax, and you could find yourself going down a rabbit hole---or simply end up making an Errol Morris--lite essay that's a mildly diverting curio at best.
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