His glove.
The sexton returned Dimmesdale's glove, which was found on the scaffold. The sexton believed that the glove was there because Dimmesdale had visited the scaffold in the night, revealing his guilt and inner turmoil.
Pearl and Hester do join dimmesdale in his vigil.
He thinks that Dimmesdale is going to tell everyone about him being Hester's husband.
Chillingworth climbs the scaffold to witness Dimmesdale's public confession and moment of anguish. He wants to observe Dimmesdale's downfall and suffering as revenge for the affair with Hester Prynne. It is symbolic of the emotional and psychological torment that Chillingworth inflicts on Dimmesdale throughout the novel.
In the marketplace, on the scaffold where Hester Prynne had previously stood with her baby as a punishment for her sin. This is where Dimmesdale finally confesses his own guilt and reveals the scarlet letter A on his chest.
Dimmesdale stops at the scaffold to finally confess his sin of adultery and publicly reveal his guilt and shame. He seeks to unburden himself and find redemption by acknowledging his wrongdoing in front of the community.
Roger Chillingworth approaches Dimmesdale just as he invites Pearl and Hester to join him near the scaffold.
After the sermon, the townpeople were talking about Dimmesdale and after he got to the scaffold, he asked Pearl to kiss him, and she did, but then th died.
Chillingworth suggests that Dimmesdale could have successfully escaped him during the period when they were both staying in the wilderness, away from the prying eyes of the town. He believes that if Dimmesdale had chosen to leave civilization and live in seclusion, he would have been free from Chillingworth's manipulations.
Dimmesdale ascends the scaffold to publicly confess his sins and seek redemption for his guilt. The act is both a form of catharsis for Dimmesdale and a way to publicly acknowledge his role in Hester's shame.
Mr. Dimmesdale goes to the scaffold in the marketplace at midnight to publicly confess his sin of adultery with Hester Prynne. This act is a way for him to seek redemption and relieve himself of the guilt he has been carrying.
Hester Prynne found Arthur Dimmesdale's lost property, which was a glove, on the scaffold where they had their secret meeting.