So Connor entered the building with Robin's gun, with absolutely no idea what he was doing. Which is probably what led to him being jumped, having Robin's gun stolen, and then getting thrown into a dungeon-esque room where Murphy was chained to the wall. (No, Athena, stop thinking that! Bad!)
"Hello, Connor," Murphy said dryly. "Your rescue plan is going well."
"Fuck you, at least I tried. Who the hell are these people?" Connor said, attempting to break his twin loose.
"Cousins of Yakavetta."
Connor rolled his eyes. "They're like rabbits, these fucking Italians."
Murphy rubbed his now free wrists. "So, genius, how did you plan on getting out?"
"Well… I have back up," Connor said.
Murphy raised an eyebrow. "Aye?"
"Aye, just wait about seven minutes, all right?"
"Who is this mysterious back up?"
"…Barney."
"No way, you guys hooked up last night?"
"How the fuck would you know that?" Connor demanded.
"I'm your twin brother, I know this shit," Murphy said matter-of-factly.
"Eh, whatever."
Approximately seven minutes later, there was a loud BANG outside the dungeon-esque room, and then the unmistakable screams of frightened Italians. And then Barney opened the door.
"Come on, guys, it's all clear," he said brightly, tossing Robin's gun to Connor.
Connor stared at him. "What the – how the fuck did you do that?"
Barney laughed. "Please."