A dark secret resurfaces when Jenna Cavanaugh returns to Rosewood; the girls deal with questions surrounding Alison's death.
Relationships are explored among the girls as they pay tribute to Alison's memory; Aria encounters her father's former mistress.
The girls pay the price for trying to ignore "A"; a new male arrival changes the status quo; Spencer's father asks her to throw a tennis match.
Disturbing secrets threaten to ruin the girls' homecoming dance; an odd date choice leads to a sticky situation.
Alison's brother, Jason, arrives in Rosewood as last-minute preparations are made for her memorial service.
