Turn Season 2, Episode 10... Abe sets out to kill the courier that was giving his spy notes from Hewlitt to John Andre.
It was probably close to their village but I don't get why Rogers just happened upon the EXACT spot or I am missing a plot branch. So Rogers was basically on top of Abe while Abe was killing the courier - he had him tackled in seconds.
Meaning Rogers wasn't a mile away and heard a gun shot and tracked him down. So I am assuming that Rogers is following Abe or this is just the best bit of luck (unlucky for Abe) in the world. Why would Rogers be following Abe out of all the things Rogers could be doing?
Also I went back and watched it again and Rogers tone with Abe was more around he was surprised to see Abe do that but had a sneaky suspicion Abe was hiding something.