Butcher's Bill 2

Butcher's Bill 2 is a Railroad side quest in Fallout 4.

Detailed walkthrough
This is similar to the previous Butcher's Bill quest except instead of finding the status of a place, you're tasked with learning the status of a person, Agent Blackbird. Again, speak to Doctor Carrington for the assignment. Your first destination is another dead drop at a random location. The information from the dead drop will lead you to a random safehouse. Inside, you will find what was left of Blackbird. Pick up Blackbird's belongings and return to Doctor Carrington to make a report and close the quest.