Godwin is most famous for two books that he published within the space of a year : `` An Enquiry Concerning Political Justice '' , an attack on political institutions , and `` Things as They Are ; or , The Adventures of Caleb Williams '' , which attacks aristocratic privilege , but also is the first mystery novel .
Godwin is famous for two books that he published within the space of a year : `` An Enquiry Concerning Political Justice '' , an attack on political institutions , and `` Things as They Are or The Adventures of Caleb Williams '' , which attacks aristocratic privilege , but also is virtually the first mystery novel .