- Jenna Coleman as Zatanna Zatara
- Jon Slattery as John Zatara
- David Tennant as John Constantine
- Chris Cooper as John Dee/Dr. Destiny
- Keith David voices Nebiros
- Benedict Cumberbatch as young Bruce Wayne (cameo)
A flashback is shown showing Zatara training Bruce Wayne and Zatanna flirting with Bruce, who is five years her senior. We then jump forward to a couple years later right after Bruce leaves and Zatanna is at college. The demon Nebiros is banished by Zatara, but not before he cast a spell preventing Zatanna and Zatara from seeing each other. The spell can only be undone by Nebiros, but since he has been banished, the spell will last indefinitely.