VERTIGO
Spirals evoke the literal and figurative feelings of vertigo that hound Scottie and Madeleine/Judy. The opening credits feature a spiral emerging from a woman's eye. When Scottie looks down from the roof at his fallen colleague, the dead man's limbs are splayed in the shape of a spiral, indicating that events have spiraled out of control.

ROMANTIC LONGING
While Scottie's acrophobia is his most apparent Achilles' heel, his true tragic flaw is his penchant for romantic delusion. He fools himself, and is easily fooled by others, into believing in illusions that are romantically gratifying to him. Hitchcock presents Midge as a highly sympathetic character and prompts viewers to root for her in her vain attempts to woo Scottie. Midge is the antithesis of romantic delusion, firmly grounded in the real world and able to offer Scottie a mature kind of love. But this is the kind of love that Scottie rejects in favor of the illusive, dreamlike love he finds with Madeleine. And it is his decisive submission to delusion that ensures the film's tragic ending.

THE IMPENETRABLE NATURE OF APPEARANCES
Madeleine's character is nothing but appearance. She is a fabrication loosely based on the legend of a dead woman, and Scottie's attempt to understand and penetrate that appearance is what leads to his downfall and the downfall of Judy/Madeleine. After assuming Madeleine's appearance at Scottie's insistence, Judy has difficulty penetrating her own mask. By the time Scottie drags her up the steps of the bell tower, she no longer has a firm grasp on her true identity and alternates between speaking as Judy and as Madeleine.