Don Knotts has the leading role in his special guest episode plus his name is listed above and before Andy Griffith's name.
After leaving her acting career in the mid-1970s, Diahn Williams, who plays Teena Andrews, became a highly successful New York attorney. She has also appeared as a commentator for Court TV on several televised trials.
The show gives away its West Coast filming location when the TV announcer says he is broadcasting for station KNC. With a few exceptions, TV call letters east of the Mississippi River begin with W and with K west of the river.
The opening shot shows what is supposed to be the outside of the Raleigh Police Department. The black and white cars clearly belong to the LAPD. Raleigh's cars in 1967 were blue and white.
In 1967, Don Knotts won a Primetime Emmy award for his performance in this installment #7.19, 'Barney Comes to Mayberry.'