Parsing help please!
I've completed this week's puzzle but remain unable to parse two of the clues.
5a should be straightforward: "Grave sin - eliminating men in hostile circumstances" (6) The solution must be ENMITY but I cannot see the "grave sin" which I have to remove "men" from - if that's what's required. I'm sure I'll kick myself...
16d "Flier uncovered book of navigational routes" (7) I've got ORTOLAN.
I can see a book in there (OT) and I can also see ORLAN backwards in the clue. No idea how to put it together though. It struck me that a navigational route could be an LAN - at a stretch.