What prediction can be made about what will happen to the narrator on The Tell-Tale Heart?

Based on the narrator's increasing paranoia, erratic behavior, and obsession with the old man's eye, it is likely that the narrator will eventually be unable to contain their guilt and confess their crime, leading to their downfall. Their deteriorating mental state and the growing burden of their actions may become unbearable, pushing them to seek absolution or face the consequences of their deeds.