A Single Monstrous Act — Kenneth Benton

When it is discovered that there is a carefully worked-out plan by Trotskyite groups to trigger off a full-scale revolution and destroy democracy in the United Kingdom, the Special Branch of Scotland Yard must thwart the plot. They discover, piece by piece, what is planned. Neither side knows the extent of the other's knowledge, and deception is practised by both. But while the struggle between the 'inside' groups develops, time is running out...