The Straight and Narrow Road

[isilienelenihin]

Amelia Pond had two imaginary friends growing up.  One was a madman with a box known as 'The Doctor' who promised to return for her.  The other was a blonde girl who seemed to be a sort of unreliable guardian angel.  Who are they, and what do they have to do with the crack in her wall?

Prologue:  White Knights and Blue Boxes
1.