Compound Interest is the third Mr. Faber Work contact mission included as part of the Money Fronts DLC in GTA Online.

In the Compound Interest mission, your first task is to locate a gang member named Skinny, who will then lead you to the whereabouts of Mr. Faber's stolen diamonds.

Be prepared for numerous gang fights throughout this mission. You also have the chance to earn maximum profit by completing an optional objective.

Finding Skinny

Your first task is to find Skinny. When you reach his house, you'll find it surrounded by the Los Santos Triads. Clear them out and head inside.

Los Santos Triads outside Skinny's house.

Once in the house, go through the first door, then kick open the door immediately to your right - that's where Skinny's hiding. After a brief chat, Skinny will leave. Follow him outside, and he'll then start following you.

The Lockup

Now, drive to the lockup where the diamonds are. Once you arrive, you'll need to protect Skinny by taking out the attacking Los Santos Triad gang members so he can get to the container holding the diamonds.

Protecting Skinny from the Los Santos Triads.

One of the Triad members will have the code for the biometric box holding the diamonds. This guard will be marked with a "$" on your minimap. Take him down, pick up the dropped safe code, and head back to the lockup.