Tomorrow, it will be 20 years since Dan Voinea helped send Nicolae Ceausescu before a Christmas Day firing squad.

But the anniversary of the climax to Romania's revolution will not bring unalloyed joy to the prosecutor, or indeed to his compatriots, as they struggle to unearth the truth of what really happened in those extraordinary days, and to discover whether it was a vengeful people or a communist clique that really toppled the Romanian dictator.