At first he thought of turning round and facing the man sharply.

But this, he reflected, might lead to a rupture.

A rupture was to be most carefully avoided.

He was determined, however, to assure himself that he was followed.

With this view, he made a circuitous tour of the city.

Still the man was there like his very shadow.

"This is unendurable," muttered Jack.

So he drew up short.

Grasping a pistol, which he carried in his pocket, with a nervous grip, he waited for the man to come up.

But the man did not come up.