<P> Kathryn eventually decides to go to Boston and let David be with Mary Margaret only to disappear before leaving Storybrooke, due to an effect of the curse being that no one can leave the town . Some time later an antique jewelry box which belonged to Mary Margaret when she was a child is found buried near the old toll bridge and is revealed to contain a human heart which is proven to be Kathryn's via DNA testing . Mary Margaret is arrested for Kathryn's supposed murder and hires Mr. Gold as her attorney . Things do not go well for Mary Margaret, who is about to be prosecuted by corrupt District Attorney Albert Spencer (Alan Dale), who's really Prince Charming's adoptive father King George, when Kathryn is found alive in an alley . It is revealed that Regina and Mr. Gold plotted to frame Mary Margaret and force her out of Storybrooke, but Mr. Gold double - crosses Regina and lets Kathryn go to exonerate Mary Margaret . When corrupt Daily Mirror chief editor Sidney Glass (Giancarlo Esposito), who's actually the Magic Mirror, confesses to having abducted Kathryn in order to jump - start his career, Emma is not convinced and comes to the conclusion that Regina orchestrated the conspiracy and forced Sidney to "confess". </P> <P> Emma soon discovers that writer August W. Booth (Eion Bailey), who is the first stranger ever to arrive in town after she did, is from the Enchanted Forest as well and that he is Pinocchio, who was sent to our world through the same wardrobe that brought Emma to watch over her . But he abandoned her out of fear and is slowly turning back into a wooden puppet . Emma then makes an attempt to take Henry out of Storybrooke forever, but is then forced to reconsider when he refuses to go . Emma makes a deal with Regina in which she leaves but still visits Henry on occasion . </P> <P> But Regina knows Emma's true identity and has retrieved her poisoned apple (the same one she used on Snow White) in order to use it on Emma in the form of an apple turnover . Henry takes a bite of the turnover, collapses to the floor unconscious, and proves to Emma the curse is real . Emma, who now starts to believe after seeing flashbacks of her true past, is forced to forge an alliance with Regina and retrieves Rumplestiltskin's true love potion from underneath the Clock Tower, only to have Mr. Gold steal it leaving Emma halfway up the elevator shaft and Regina tied to a chair and gagged . </P> <P> When Henry is pronounced dead, Emma and Regina return to the Hospital to say goodbye to his body . Emma kisses him on the forehead, causing a pulse of energy to engulf the entire town and restore everyone's true memories while freeing Henry from the effects of the poisoned apple . Snow and Charming reunite with each other and Regina returns to her mansion alone as Emma begins to wonder why no one is returning to the Other World since the curse is broken . Rumplestiltskin reunites with his true love Belle (Emilie de Ravin) and takes her to a Wishing Well deep in the heart of the forest, a well with the power to restore that which one had lost . He takes the potion and drops it into the well, causing a purple cloud to emerge and consume Storybrooke as the Clock Tower strikes 8: 15 . </P>

When does emma start believing in the curse