Mission in Mafia 3: just like old times

Drive to the Haitians. Once there, take a seat at the bench. Make your way through the warehouse to meet the informant. Now go to the Voodoo shop. Get inside the building by climbing up to the balcony that’s next to the garage.

Take a seat on the couch and wait for Cassandra to arrive and trigger a cutscene. She will then become one of your lieutenants. Cassandra allows you to call in arms dealers and buy weapons when necessary. Once you go outside the shop, you can talk to one and see what he has to offer. You will now have new missions with Cassandra shown on your map.