A few days later, Arthur Morgan meets Michael and Dutch at Saint Denis, and Dutch goes through with the bank heist that Angelo Bronte suggested towards them (subtly insulting them when he did so).
The 3 have bandanas on, as was traditional for the time. However, the 3 discover the place has nothing in terms of money. And the law comes all too fast, and with an army, Dutch realizes Angelo set them up which angers him.
They steal a bus to try and escape but it eventually crashes. Dutch bangs his head from this, which many theroizes was the beginning of his slow fall from sanity. And that Dutch is mentally unwell, which still makes Micah pretending to be Dutch's friend in order to manipulate him, all that worse in comparison.
After a long battle the 3 escape, but with no money for their efforts.
Angered by the betrayal Dutch takes Michael and Arthur to a new friend of his, who knows a way to Angelo's house through an alligator swamp. Michael doesn't like the idea of going for revenge, saying it's unlike Dutch. But Dutch goes into an angry rant about feeling like everyone is always questioning him, and that if he and Carly want to leave back to Los Santos then nobodys forcing him to stay. Michael says he can't until they fix the portal or whatever. Dutch doesn't have much of a reply.
The 3 sneak into Angelo's house and kill all the cops and Dutch plans to hold Angelo for ransom. But on the way through the swamp, Angelo insults Dutch and says he's just some outlaw. Dutch says Angelo is just some dog belonging to Milton.
Out of nowhere, Dutch violently drowns Angelo Bronte in the swamp during the same ride back. Which is considered as a very disturbing moment, as up until that point Dutch had been mostly seen as a very calm and kind natured man. Even worse, he then tosses Angelo's body to a nearby alligator, who doesn't think twice about eating it.
Michael: Jesus man. What part of your philosophy books cover, feeding a feller, to a goddamn alligator, Dutch?!
Dutch: The part that covers, weakness... That part.
