"If he has a conscience he will suffer for his mistake" refers to a murderer in this 1866 novel
[DOC] [TLE] Crime and Punishment Book Notes - BookRags.com [PAR] In 1866, Crime and Punishment and The Gambler were published, solidifying .... 
Porfiry Petrovitch: The chief examiner of the murder case and Razumihin's uncle, 
Porfiry .... Quote 8: "If he has a conscience he will suffer for his mistake.