2 episodes left
tbf, he doesnt know that is where the dangerous criminal is. Maeve's prints came on the bucket Sam had so he investigating that. When he see's Robbie he doesnt know that is the exact guy who hit the dude til the sketch comes in, at which point it's too late.
No, he was going to sell the drugs to Freddie(which Eryn told him not to do). Freddie told the Dark Hearts about the meet and charged them double for the info and helping them.
Robbie may have dealt with Freddie because he ready for this shyt to end and wants to kill the Dark Hearts since he knew for a fact Freddie would tell them.