In Mafia III, you are going to be juggling a lot of property and promises between three bosses who help you build your empire. It's a neat mechanic, and can end up with your former 'family' members turning on you to kill you.
You can get a look at one of the trinity here, with Cassandra, also dubbed the voodoo queen. She's pretty ruthless all signs considered, and someone you are probably going to want to keep on side. Take a look at here in action here.