But it turns out that this episode probably never happened to Solzhenitsyn at all, and according to a Solzhenitsyn biographer it appears nowhere in his published writing. Columbia University professor Michael Scammell, the author of Solzhenitsyn: A Biography, says the episode "never happened," and didn't appear in Solzhenitsyn's book, Gulag Archipelago, either.

This only solves a piece of the mystery, but it's a key piece. It doesn't necessarily rule out the possibility that McCain or his biographer, Mark Salter, picked up the tale that this happened to Solzhenitsyn elsewhere and embellished it for their own purposes.

But it takes one well-trafficked theory off the table: That McCain, a fan of Solzhenitsyn, picked it up straight from his works. More broadly, it also skewers once and for all the cherished right-wing falsehood that this happened to Solzhenitsyn at all.

Of course, it's still possible that McCain or Salter picked this up from the sort of right-wing circles that it first originated in. After all, this tale was bandied about by Chuck Colson and many other wingnuts for years; McCain or Salter could have picked it up from such circles, as the notes from Colson's 1983 book, Loving God, explain:

"The story about Alexander Solzhenitsen and the old man who made the sign of the cross was first told by Solzhenitsyn to a group of Christian leaders and later recounted by Billy Graham in his New Year's telecast, 1977. It has been retold subsequently, most publicly by Senator Jesse Helms (R-NC)."