Very well said.
The "social circle" concept is especially beneficial in a small town. Though I am not saying that everybody knows everybody's sexual, criminal, vengeance fantasies, respect / disrespect issues, such things are harder to conceal in a small town due to close proximity.
I am from a relatively small town. Extended social circle wise, I knew a very close pair of twenty year old cousins with violent fantasies- including ordering "hits". They were, were committing a variety of criminal acts, had fantasies about forming a "biker / mafia family". Their charisma and one in particular's intelligence made them potentially more than just standard small town talkers.
On another occasion, a local man came into the garage where I worked to buy tires. I among other




, I saw extreme SM




in the trunk. I knew of only one store in town that sold some of the the laminated page stuff he had- sick, I know. Other magazine may of been from a mailing list. If needed, I could also tell the police where the man probably bought gas / magazines as well as describe him, his car and the exact tires (tread marks) he bought. The name he gave would also be on the store receipt. I could even describe a few of the magazine titles and maybe the issue dates- thus possibly further narrowing his movements.
If there was a horrible crime in that town, a published motive either criminal or sexual might make me think of those people.