Jari Järvelä's trilogy of thrillers are set in the world of graffiti and street art. The protagonist is a young Finnish-African outlaw graffiti artist who calls herself Metro.

The title and cover image of "The Girl and the Bomb" refer to The Bomb Hugger, a piece by Banksy. Orange is the colour of Finnish metro trains.

In the second book cover I used an extra printing color, a fluorescent green.

My partner modeled for all three cover photos. The grainy texture resulted from using an old pocket camera in poor lighting.