Modern Logo Design for Young Adult Spy Novel

I require a modern logo for my debut book, which has been commissioned. The story revolves around six teenage British spies, Junior Spooks, known as JS6, so the logo should cleverly incorporate symbols related to this theme.
The logo "JS6"!

Key Requirements:
- Modern design aesthetic
- Understanding of and ability to represent "teenage British spies" in a logo
- Creativity in incorporating thematic symbols into the logo