"Good Heavens, man!" came Lady Brenton's voice again, "are you mad to accuse me of such a thing? Why should I murder her, poor creature? And how?"

Came a cackle of harsh laughter like a shot on a tin roof.

"Well acted, my lady, but it won't work. Don't forget, I saw you in that very room, when, according to our old friend, Constable Roberts, Miss Cheyne was dead. Well, who killed her, I say? You did not know I saw you but I caught sight of your golden scarf as you bent over the body——"

Cleek sucked in his breath hard and a brighter sparkle shone in his half-shut eyes. So Lady Brenton was there, was she? If this were true, then Sir Edgar knew more than he professed, and he was shielding someone other than Lady Margaret—and that someone was his own mother!

Lady Brenton had remained perfectly still, as though dumbfounded at the charge made against her. Either that was it, or she was striving how best to free herself from the power of this man who held her guilty secret.

Then she spoke suddenly.

"You really mean that you think I killed that poor defenceless old woman?"

Cleek could fairly see the cynical smile that crept over the man's features, for the tones of his voice betrayed it.

"Dear lady," he answered, "it is what anybody would say if they had seen you, as I saw you, emerge from that room with a gold lace scarf round your face. I watched you cross that lawn and vanish in the darkness."