"In the Westeros justice system, the people are represented by two separate yet equally important groups: the Kingsguard who investigate crime and the high lords who prosecute the offenders, unless they demand a trial by combat, in which case they each pick a fighter and all of the "evidence" and "witnesses" stuff gets discarded in favor of two people fighting. These are their stories."
And afterwards, stay tuned for CSI: Daenerys.