No Evidence Left Behind

"Why did you let that guy escape?" 

Trevor was looking around the room at the damages for a while before he shrugged.

"It would have been impossible for me to keep him here killing him would have made more of a scene. All we can do is report it."

He stopped to think before he continued "They seemed to have had an elaborate scheme to dampen the noise. Whoever this was they definitely planned it perfectly".

He picked a small device off the wall then showed Jacob, "Any ideas?".

Jacob understood why he showed him this. After it came off he could hear faint noises from outside.

'That things dampened the noise?' looking at how small the device was it was hard to believe'

"Fine let's go and report this, but first take this" Jacob went into a drawer and took out a super rare class knife that he used to unscrew the vent."If they found something like this it would not help my case" 

"Why are you so calm about this?"