Deal Breaker

Deal Breaker was an altered representation of one of Aguilar de Nerha's genetic memories.

Aguilar's Journal
''We have reclaimed Horacio's estate, but he was severely wounded. While he rests, we shall carry out his vengeance.''

''The Inquisition sergeant was not present during our fight, but we tracked him down to the local slums. It seems he's about to strike an unknown deal with the resident slumlord.''

We must sneak to their meeting, stop the deal, and retrieve any intel we can find about the Heredia family's execution.

Reference

 * Assassin's Creed: Rebellion