This mission is the first in a string of six missions focusing around Ricardo Diaz's drug empire.
After losing a bet on a horse race, Diaz tells Tommy that he works for him solely. Tommy disagrees, but no matter. Diaz tells of one of his dealers that is taking 3% of profits. Even though this is a small amount, Diaz doesn't want him getting any ideas to rip him off more. He wants Tommy to go to the dealer's apartment, and follow him to see where he stashes the money.
Head to the apartment in Vice Point. There's no sign of him in his apartment, but Tommy soon scopes him at the top of the stairs. He flees, and you have to chase him across the rooftops, avoiding gunshots and explosive barrels. He eventually makes his way to a dune buggy, and you have to chase him on the Faggio nearby. Keep your distance all the way, as he will shoot at you with his assault rifle. The chase goes around the North Point Mall, and eventually to Prawn Island, where he flees inside the building. Tommy can now tell Diaz where this thief is hiding.
Mission Passed: $1,000