The Puzzlemaker: Murder Is Only A Word Away

After 10 years service as a cryptographer with MI6 during the cold war, the extremely shy and reclusive George Withers becomes editor and compiler of the Sunday Times crossword.
30 years later and now in his 60's, an old MI6 colleague asks him to place a code within the Sunday Times cryptic crossword puzzle. Unknown to him, this results in a number of gruesome deaths. The father of one of the victims discovers the puzzle maker had something to do with his son's death, and goes on the hunt. Now George has to solve his own puzzle to save his own life.