Red Dead Redemption 2 How to Find Billy Midnight and Mission Walkthrough
Billy is a bit trickier to find but to start you’ll need to go further south to the train station at Rhodes.
Go in and talk to the ticketing gate and the gentleman there will tell you to check the next train’s bar car.
So hop on the next train and head through til you find the carriage with a bar in it. Billy Midnight will take off down the cart after you talk to him, so head after him. You’ll need to climb onto the roof of the train to catch him.
Once you’ve caught up to him another quickdraw event will take place, defeat him and again take his picture and his weapon.