Draw This Line 1/1

There are no spoilers for 4.13 – I wrote this before the episode aired and only took information from the trailer at the end of 4.12. So it’s very AU!

Rating: R just to be safe [for violence]
Warnings: Torture, character death (not Arthur or Merlin), battle-type violence, restraint (shackles).
Pairing: Arthur/Merlin
Length: ~5000
( Summary behind cut just in case! )