Not Quite Unknown

"I'm telling you, Fox, this is different!" Lion argued. They were several weeks into their assignment, infiltrating an artifact smuggling ring in France. Mostly it was gruntwork in various warehouses.
"It was awfully hush hush that whole thing, init?" Fox agreed. "An' the orders for it came from Paris..."
"If there is someone else in charge - "
"We need to find out. Better send word back though."
They did, but before they heard back from HQ, Lion volunteered as courier to Paris.
When he caught a glimpse of the leader of that operation, he knew he saw those scars somewhere before...