Just call it, "CSI: Mayberry"
I wish I had the imagination to do your brilliant idea justice.
Barney: Andy, I'm arresting Aunt Bea.
Andy: Now Barney, what ever would make you say a thing like that?
Barney: Somebody stole an blueberry pie from the Women's Auxiliary table at the fire house social, and Aunt Bea's fingerprints were all over the pie tin I found outside of the window...I figure she must had reached in and grabbed it. Just a' grabbed it like nobody's business.
Andy: Well - did it ever occur to you that maybe she was the one that baked the pie?
Barney: *embarrassed silence*
Andy: And how did you get Aunt Bea's fingerprints anyway? You don't mean to tell me....