This mod changes the Guard behavior by modifying how Guards react to player crimes. If you attack a guard, only that Guard will defend himself (no other Guards will attack unless they see the fighting.) If you manage to outrun the Guards, they will no longer chase you to the ends of Tamriel. Also, if your health is drained significantly, you will be knocked out and the Guards will simply transport you directly to jail. If you are sent to jail, the guards will kill you rather than trying to put you back into your cell if you escape.
If you manage to kill all the Guards that witnessed your crime, that crime gold will be removed.
If you attack a Guard from long range and they do not immediately see you, they will begin to search for you. While searching they will recruit other Guards to help them search. If any of those Guards finds you, they will try to arrest you.
Each city now has its own crime gold - meaning that if you attack someone in Chorrol, the guards in Cheydinhal will not attack you because they do not know about the crime in Chorrol.
Different crimes will be remembered for different amounts of time (typically anywhere from one game day for stealing to seven game days for murder.) These values can be changed either when you start using the mod, or by typing 'startquest RenCrimeConfig' into the in-game console.
If you kill a Guard or a civilian, Guards will notice the corpse. If a Guard notices the Corpse Stench, they will investigate and have a chance of discovering who killed the victim (namely, you.) They will know about the crime and try to arrest you the next time they see you. It is recommended that if you kill someone, you do your best to hide the body. To help in this task, a 'Corpse Carry' spell (think of a Telekinesis spell that can only move dead corpses) is added to Shady Sam for you to buy (but it's free.) Simply cast the 'Corpse Carry' spell at a corpse and you will be able to carry it. Just hit your 'Shift' (Run) key to drop the corpse where you want it. If the corpse doesn't fall down, use the Z key to have it drop (this is obviously a known bug.) If you are carrying a civilian (defined as an non-evil NPC,) Guards will try to arrest you, thinking that you (probably) killed the person you are carrying. So be careful.
If you hurt a guard badly enough, and there are no other guards to back him up, he will flee from you to avoid being killed.
Wanted Posters will now be posted in several different locations around Cyrodiil - currently they don't have any impact except to look pretty. In future versions they may change how NPCs react to you. They will only appear when your gold for a particular region goes above 1000.
There are Disguises that you can use in-game to avoid detection by the Guards for your crimes. These Disguises can be purchased at Jensine's "Good As New" Merchandise:
Fighters Guild
Mages Guild
Thieves Guild
Imperial Legion
Nobility
Dark Brotherhood
Mythic Dawn
Blackwood Company
Blades
Imperial Palace Guards
Beggars
Necromancers
Each disguise has its own crime gold, fame, and infamy stats attached to it. If you switch disguises, you won't have the bounty / fame / infamy that was on the disguise until you switch back to it. Also, you cannot change into or out of a disguise while you are detected by any other actor or creature.
If you are caught / go to jail while committing a crime while in Disguise and sent to jail, all the crime gold that is 'on' the Disguise will be put onto your 'normal' character (so you will have your 'normal' crime gold plus your Disguise crime gold.)
You are also able to bribe Guards to leave their posts. Say you want to rob a store, but there is a Guard sitting right outside. Just bribe him, and he will wander off. If he sees you committing a crime, though, he will still come after you.