Edith was continually on the alert, watching every look and word and act with untiring scrutiny.

Mrs.Dinneford soon became aware of this.

Guilt made her wary, and danger inspired prudence.
Edith's whole manner had changed.

Why?
was her natural query.

Had she been wandering in her mind?
Had she given any clue to the dark secrets she was hiding?
Keen observation became mutual.