Let us proceed by induction.

Anastasie, do you know anything that can help us ?' Anastasie knew nothing.

'Or you, Jean-Marie ?' 'Not I,' replied the boy steadily.
'Good,' returned the Doctor.

'We shall now turn our attention to the material evidences.

(I was born to be a detective; I have the eye and the systematic spirit.) First, violence has been employed.