For Ingrid Newton's final journey she passed the decisions for her journey to someone else. Book Six - "Text Message Rules" is derived from a series of text messages providing Ingrid with tasks and destinations. Like a treasure hunt, she explored the London streets going from one point to another, receiving the next instruction only when she had completed the last.
Free from her own pre-determined rules, she handed over her will and her journey to another person. Absolving herself of this responsibility Ingrid discovered a freedom to roam and observe with fresh eyes a city she knew so well but was only just discovering.