Traitor is the second chapter of Book VIII of Fire Emblem Heroes.

The five parts of this chapter are Mending Hand (看護の癒し手, Kango no Iyashite lit. Nursing Healer), Flower Picker (花咲く笑顔, Hanasaku Egao lit. A Blooming Smile), Secret Dreamer (秘めた憧憬 Himeta Dōkei lit. Hidden Yearning) Fate's Resolve (未来への決意, Mirai e no Ketsui lit. Determintion for the Future), and Espionage (諜報 Chōhō lit. Secret Intelligence).

Part 1: Mending Hand

Subjective: The following part of this article is based upon the editor's personal experiences and opinions, and therefore may not be applicable for all readers.

You will have 4 units on your team. You will also have 4 opponents: Laurent, a Red Mage, a Lance Cavalier, and a Cleric.

Part 2: Flower Picker

You will have 4 units on your team. You will also have 4 opponents: Inigo, a Bow Cavalier, an Axe Flier, and a Lance Fighter.

Part 3: Secret Dreamer

You will have 4 units on your team. You will also have 4 opponents: Severa, an Axe Knight, a Thief, and a Blue Flier.

Part 4: Fate's Resolve

You will have 4 units on your team. You will also have 4 opponents: Lucina (Fate's Resolve), a Troubadour, a Sword Fighter, and a Blue Manakete.

Part 5: Espionage

You will have 4 units on your team. You will also have 4 opponents: Severa, Laurent, Lucina (Fate's Resolve), and a Lance Knight.

Trivia

• The music playing in this chapter is "Destiny (Ablaze)" from Fire Emblem Awakening.
  • This marks the fifth time in Fire Emblem Heroes that music from a previous chapter is reused in another chapter.