Why Esther invited Haman to her parties with Achashverosh: Megillah 15b Achashverosh's suspicion of Esther and Haman: Megillah 15b-16a, 19a
Esther's fear of Haman: Megillah 16a
Esther first pointing to Achashverosh in identifying the Jews' enemy, then an Angel turning her hand toward Haman: Megillah 16a