About forty years ago, when I was a new Ph.D., Percy Bysshe Shelley (as opposed to Mary Shelley) and Gothic were not considered important subjects of study, at least not together, and Gothic as one of P.B. Shelley's styles was relegated to his two highly imitative early novels of 1810-11, Zastrozzi and St. Irvyne, along with some early poetry. For last few decades this dissociation has been only gradually [right arrow]corrected by sporadic studies (such as those by Finch, Rajan, and Whatley) that have seen Gothic motifs in several Shelley masterworks long after his early novels. But not until recently has pervasiveness of Gothic in Shelley been fulsomely and continuously examined to point of generating ongoing debate about what that migration reveals. In 2015, a volume in Romantic Circles Praxis series published several new essays on Shelley and Gothic (see Brookshire), and range of debate is not stopping there. It is thus only fitting for me to offer another possible answer to a surprisingly current question: what does it mean in Shelley's thinking and for Gothic that it migrates across his work as widely and as persistently as it does? In one of those Romantic Circles essays, I offered beginnings of such an answer by proposing what I called the Gothic in Shelley (Hogle 2015), but even I did not realize then just how far it goes in a great deal of his work. I would therefore like to use this opportunity, in honor of Robert Fangbaum's pioneering work on Romanticism, to modify my past short-sightedness and, I hope, deepen my sense of that complex to offer some better explanations of why schemes from Gothic--descended, yes, from Horace Walpole's The Castle of Otranto (1764)--are really essential to Shelley for iconoclastic questioning and reworking of Western assumptions that he aims to incite in his readers. First, let me note briefly that I do not think what I call Gothic complex explains every use of Gothic figures in every one of Shelley's works; hence great insights in what is revealed in recent scholarship on this subject by other authors (especially Rajan). But I do believe that this coalescence, which I see as a series of steps often taken by Shelley, and speakers or characters of his, in writings from Zastrozzi onwards, is a method he uses amazingly often to jolt his audience out of stultified modes of thought towards transformations that begin to offer a different vision of world, yet without discounting lingering human attachment to older ways of thinking. The steps in this Gothic complex are usually five, as I see them, and readers can witness an instance of all five at work in this passage from Shelley's flagrantly Gothic Zastrozzi: Scarcely knowing where he was, or what to believe, for a few moments Verezzi stood bewildered, and unable to arrange confusion of ideas which floated in his brain, and assailed his terror-struck imagination. He knew not what to believe--what phantom it could be that, in shape of Zastrozzi, blasted his straining eye-balls --Could it really be Zastrozzi? Could his most rancorous, his bitterest enemy, be thus beloved, thus confided in, by perfidious Matilda? For several moments he stood doubting what he should resolve upon. At one while he determined to reproach Matilda with treachery and baseness, and overwhelm her in mid-career of wickedness; but at last concluding it to be more politic to dissemble and subdue his emotions, he went into breakfast-parlour which he had left, and seated himself as if nothing had happened, at a drawing which he had left incomplete. Besides, perhaps Matilda might not be guilty--perhaps she was deceived; and though some scheme of villainy and destruction to himself was preparing, she might be dupe, and not coadjutor, of Zastrozzi. The idea that she was innocent soothed him; for he was anxious to make up, in his own mind, for injustice which he had been guilty of towards her: and though he could not conquer disgusting ideas, unaccountable detestations, which often, in spite of himself, filled his soul towards her, he was willing to overcome what he considered but as an illusion of imagination, and to pay that just tribute of esteem to her virtues which they demanded. …