The next couple of hours faded for Marcus, full of muffled cries, Rin's voice harsh as her knife, and a smell that brought unfamiliar memories to mind.  But he didn't move unless asked to, well aware of how much this man deserved and determined to see it dished out to him.  
When they were finally finished he helped Rin get rid of the body and clean the site, even scrubbing her hands and arms clean when she seemed to upset or angry to do so herself.  He wasnt sure, her emotions had been a strange mix all night.
Now, finally finished, he was waiting for her by the truck after having cleaned himself up and checking to make sure they'd left no sign of their activities.