Mr. Frank, the Underground Mail-Agent
Vidi
 The novel centres on Mr. Frank, a kindhearted but empty-headed worker for the Underground Railroad, where he works to help runaway slaves from the South flee to the Northern United States and then onto Canada. Originally, Mr. Frank is an abolitionist at heart, but comes to believe that slavery is a necessary evil, for while it is wrong, the slaves themselves are better off under their Southern masters than they are in the North. As time passes, Mr. Frank also learns of the corruption within the Underground Railroad itself, discovering that the abolitionists he works with are nothing more than hopeful slaveowners, convincing slaves from the South to run away from their original masters with promises of freedom, only to be enslaved once more.