The shock of separation had rent away a few scales from his eyes, and his vision was clearer; but the clearer vision did not lessen his misery--for self-upbraidings crowded in with the illustrating light.
For a while, jealous suspicion kept him watchfully alive to the movements of Paul Hendrickson.

In order to gain the most undoubted information in regard to him, he secured the services of an intelligent policeman, who, well paid for his work, kept so sharp an eye upon him, that he was able to report his whereabouts for almost every hour of the day and evening.
Days, weeks, months even passed, and the policeman's report varied scarcely a sentence.

The range of Hendrickson's movements was from his place of business to his lodgings.

Once a week, perhaps, he went out in the evening; but never were his steps directed to the neighborhood in which the object of his waking and dreaming thoughts resided.
In part, this knowledge of Hendrickson's mode of living relieved the mind of Dexter; yet, when viewed in certain lights, it proved a cause of deeper disturbance.

His conclusions in the case were near the truth.