A new graphic novel titled "SVK" was released today from Warren Ellis and Matt "D'Israeli" Brooker which entails hidden meanings only accessible once an ultraviolet light is shone on the pages. The novel forms part of an interesting culture of comics which trick the eye on initial contact.

SVK stands for special viewing kit and is an experimental publication, comprising the SVK object and a comic book.

The private thoughts of some characters in SVK are invisible on the page, until the reader shines an ultraviolet light on them, at which point they appear in thought balloons.

This habit of concealing content might sound bizarre, but actually is just one example of the many comics and even classic newspaper strips that use invisible inks.

Now before you go thinking you have to go out and hunt an ultraviolet light, rest assured that the graphic novel comes complete with it already.

The plot of the novel follows an investigation into perception and is a modern detective story, one that Ellis describes as"Franz Kafka's Bourne Identity."

Promotional materials promise that ''reading SVK becomes a unique and strange experience as you see the story unfold through the eyes of Thomas Woodwind.''

The comic (and torch) are available today to purchase for £10.