The main text is set in a standard block using Fairfield, a house typeface, and is suitable for a young adult or adult reader. The chapter header is simple, with 0’s being used instead of capital O’s. The folios use a three-digit style to prepare the reader for an Easter Egg treat hidden in the part titles.
The book is separated into three parts to mirror the mathematical formula that Pete is interested in: Encrypt, Invert, Recoil. To create interest, I played around with illustrating each concept typographically and came up with the above ideas. The ‘E’ and the ‘O’ use the Greek letter Xi in its capital form and 0 respectively to tie in with the maths references with the cover.
Encrypt is written in a code constructed with the Caesar Shift key mentioned in the novel, with Encrypt being the key word. The mathematical formula also deals with self-referencing so using Encrypt as a key word to encrypt is particularly fitting. Here’s a shot of working out the code:
Invert and Recoil are much simpler, using the vertical and horizontal mirror images of the original type. All the additions are filled with a percentage tint of black so as to not distract from the main part title.
Versos of part titles
On the reverse of the part titles, traditionally left blank before the text starts again on the recto, I had a little fun. Pete loves codes and he uses several different codes to communicate with other characters: Caesar Shift with his sister, Belle, and page/number word with his friend, Ingrid. I used these, as well as binary, to encode a message from the book for the readers to crack.
Each says the same: Sometimes, courage is just knowing what you’re more afraid of. The codes are not introduced in any way, so it is an Easter Egg for the reader to discover should they wish to.