“Ryland’s Hounds” is a term used throughout the novel to describe slavecatchers (both in Elm County and beyond). They are named after Ryland, the man who controls the jail where runaways are imprisoned, and who appears more as a mythical figure representing the brutal authority of the law than an actual character. Slavecatchers were a pervasive feature of the South (and, to a lesser extent, the North) during this period. They were one of the biggest reasons why escape was so challenging.