Another hard one this week ... Byron Walden rolls through with a 5/5 difficulty puzzle titled "A Little Back-and-Forth." We wish everyone good luck! Just a note, as well, that this puzzle is available only as a .PDF file. There is no Across Lite file this week; sorry for the inconvenience. This is not a spoiler alert, by the way; you'll see what's unusual as soon as you look at the puzzle.