The Drone Attack

When Jack Sanderson's boss at MI5, Sir Maurice, tasks him with interrogating an IRA defector, he uncovers a mind-boggling plot to destroy the entire Royal Family in one blow with Novichok, one of the deadliest nerve agents known to man. This is supposed to happen in a mere ten days while they are all celebrating Christmas at Sandringham, using a special drone designed by the defector. Then it is a race against time to foil the conspiracy. But, even when that is done at the very last second, it's still not finished for Jack, who is sent on a final mission by Sir Maurice to kill the instigators of the plot....
This is the fourth in the Jack Sanderson series of political thrillers after The Double Conspiracy, Traitor in our Midst and The Dirty Bomb Affair.