With the recent controversy over alleged shenanigans in the Amazon jungle, readers might find this earlier investigation into anthropological intrigue worth revisiting. A much better-known story when the book was first published in 1972, it’s the tale of a fabulously wealthy Harvard grad from a prominent family who ventures into the world of primitive society, only to disappear with few traces. Kirkus (Jan.1, 1972, p. 50) wrote that Machlin, then an editor at the men’s magazine Argosy, was inspired by some supposed sightings to renew the search for young Rockefeller, but we also thought his research more appropriate to article length. It seemed, in our opinion, “an ignis fatui gleam” in an editor’s eye. This new edition also calls for some sort of update by the author.