There are four simple ways for the observant to tell Mr Croup and Mr Vandemar apart: first, Mr Vandemar is two and a half heads taller than Mr Croup; second, Mr Croup has eyes of a faded, china blue, while Mr Vandemar’s eyes are brown; third, while Mr Vandemar fashioned the rings he wears on his right hand out of the skulls of four ravens, Mr Croup has no obvious jewellery; fourth, Mr Croup likes words, while Mr Vandemar is always hungry. Also, they look nothing at all alike.