This was Kevin Hagen's second episode as the castaways' nemesis Inspector Kobick. It was 21st in production order. The 18th episode in production order "Genius at Work" was originally intended to be Kobick's first appearance, but it was broadcast as his fourth, after his second appearance here and third appearance in "Target: Earth". The next episode produced with Kobick "Deadly Lodestone" was 19th in production order, but it was broadcast earlier and thus became the first time the public saw the character.
The "Z" logo patch on the zoo employees shirts are the same ones used for the "ZOWIE" uniforms in the Flint movies.
The title comes form the mystery novel And Then There Were None by Agatha Christie which was also published under the title 'The Ten Little Indians' in 1939.