Ten stories - Seven Doctors - One enigma

Los Angeles. The war's over, the GIs are home, Truman's in the White House and the mobsters are making a killing - as usual. Into the office of a private investigator walks a mysterious little man with a story that's out of this world. He says he's lost his memory. He wants the PI to help him. When he turns out his pockets, he produces a pile of bizarre objects, each of which restores a memory and solves a part of the puzzle.

And the memories seem to belong to seven different people.

Decalog is a new concept in Doctor Who fiction: A cycle of ten linked stories. The stories are written by authors who are well known to readers of the New Adventures or Doctor Who magazines - Paul Cornell, Marc Platt, Vanessa Bishop, Jim Mortimore, Andy Lane - and have been brought together by Mark Stammers and Stephen James Walker, who are part of the team that researches and writes in-depth factual books about Doctor Who such as The Sixties and the Handbook series.