In "A Rose for Emily," what details foreshadow the conclusion and how does this create interest and suspense?

Faulkner's "A Rose for Emily" contains numerous examples of foreshadowing, and it's the foreshadowing that gives the surprise ending legitimacy once it occurs.

First, Emily is reluctant to give up her father's body once he dies.  She keeps it in the house until she is finally talked into releasing the body for burial five days after her father's death.  In this instance, the townspeople are aware of her father's death, so ultimately she has no choice but to give up the body.

Second, Emily buys poison.

Third, Homer disappears but nothing is said about anyone ever seeing him leave.

Fourth, the house smells.

Faulkner manipulates these events by relating them in piecemeal fashion so they do not come off as hints, but instead can be used as foreshadowing to legitimize the ending for the reader.