Almost seven years ago now my Uncle Rory set out from his girlfriend's house in Glasgow to ride a motorbike to my father's house at Lochgair. He never got there. My Uncle Rory's disappearance wasn't the beginning of the mystery, it turned out, and it certainly wasn't the end. I don't know where my part in all of this begins, let's say for the sake of argument it was the day my grandmother exploded.