from back cover
There was a sudden click from the porch, as of a door being opened. The man seemed to square his shoulders, and to raise his right arm. Now at last Rollison could see that he carried something heavy, it looked like a bricklayer’s hammer with its massive steel head.
The door opened; brighter light shone but did not fall upon the waiting man. Rollison placed a hand on the wall, ready to vault over, quite sure that he could forestall any attack. He saw the shadow of a woman thrown by the light in the hall, then heard the door slam and the light was dim again.
Naomi Smith stepped from the porch on to the path.
The waiting man raised the weapon in his hand, and leapt forward.
And as he leapt and as Naomi cried out in alarm, the Toff vaulted over the wall and called in a sharp voice of command:
“Keep still! Don’t move!”