Believable Crime Report Radius
Here's a useful mod for sneaky characters and those that love stealing items/goods from shops and the homes of Skyrim's citizens.
Believable Crime Report Radius improves the crime reporting in the mechanism in Skyrim by reducing the radius in which an NPC can report a crime.
In the vanilla version of the game, the radius is 4000 units (57m) and it can sometimes lead to NPCs reporting crimes to guards that are far away. The radius with the mod active is shrunk down to 1000 units (14m). See? Far more believable.