"If you could be Mercy Merrick, and if I could be Grace Roseberry, now!" In one breathless moment the thought assumed a new development in her mind.

In one breathless moment the conviction struck her like an electric shock.

_She might be Grace Roseberry if she dared!_ There was absolutely nothing to stop her from presenting herself to Lady Janet Roy under Grace's name and in Grace's place! What were the risks?
Where was the weak point in the scheme?
Grace had said it herself in so many words--she and Lady Janet had never seen each other.

Her friends were in Canada; her relations in England were dead.

Mercy knew the place in which she had lived--the place called Port Logan--as well as she had known it herself.