Mal didn't recognize Jayne, but he knew the type. Big, burly guy, look of shock on his face -- so probably someone he'd crossed on a job. That was the down side of PI work; there were two sides to every story, and if you did things right, your client went home happy and the other guy didn't.
Subconsciously, Mal squared his shoulders. Jayne got a nod and a twitch of the mouth that stopped just shy of a smirk.
Then it was Mal's turn at the front of the line. He was reluctant to turn his back, but he was also reluctant to look as if he were too interested in the other guy. So. He had to step forward. "Yeah," Mal drawled to the woman behind the counter. "I'm returnin' a tux? Here's the ticket."
He slid the bit of paper across the counter top and laid the garment bag down beside it.