Our second episode on the life of Anthony Burns begins with his detention in Boston, which outraged Massachusetts abolitionists. Even after Burns was returned to Virginia to be enslaved once again, his supporters in Boston continued to work for his freedom.
Research:

The Rendition of Anthony Burns, Part 1
34:40

SYMHC Classics: Samuel Pepys
33:09

Behind the Scenes Minis: Pollution Olympics
24:24