The glance of fear, rather than surprise, with which she had watched the motion of the tapestry over the concealed door, implied an apprehension of danger which I could not but suppose well grounded; for Diana Vernon was little subject to the nervous emotions of her sex, and totally unapt to fear without actual and rational cause.

Of what nature could those mysteries be, with which she was surrounded as with an enchanter's spell, and which seemed continually to exert an active influence over her thoughts and actions, though their agents were never visible?
On this subject of doubt my mind finally rested, as if glad to shake itself free from investigating the propriety or prudence of my own conduct, by transferring the inquiry to what concerned Miss Vernon.

I will be resolved, I concluded, ere I leave Osbaldistone Hall, concerning the light in which I must in future regard this fascinating being, over whose life frankness and mystery seem to have divided their reign,--the former inspiring her words and sentiments--the latter spreading in misty influence over all her actions.
Joined to the obvious interests which arose from curiosity and anxious passion, there mingled in my feelings a strong, though unavowed and undefined, infusion of jealousy.

This sentiment, which springs up with love as naturally as the tares with the wheat, was excited by the degree of influence which Diana appeared to concede to those unseen beings by whom her actions were limited.

The more I reflected upon her character, the more I was internally though unwillingly convinced, that she was formed to set at defiance all control, excepting that which arose from affection; and I felt a strong, bitter, and gnawing suspicion, that such was the foundation of that influence by which she was overawed.
These tormenting doubts strengthened my desire to penetrate into the secret of Miss Vernon's conduct, and in the prosecution of this sage adventure, I formed a resolution, of which, if you are not weary of these details, you will find the result in the next chapter..