Across the road from Vinnie Sinistra's mansion is a makeshift vets surgery. When the woman crouches down to trim the hedge, run into the garage and pick the lock. On the table in the room is a packet of tranquilizer darts. Pick them up and leave without worrying if the woman sees you leaving her garage since she loses interest as soon as you are off her property. Run past the clown's car to see a woman tending to a garden down the road. Sneak past her (although it does not make that much difference if she sees you) and climb the ladder in her garden into the tree house. On the table is an air rifle. 47 automatically puts the darts into the gun as soon as you pick it up. From the tree house you have a perfect shot at the clown, pool cleaner, various agents, and Vinny's wife as they walk around the garden. One shot is enough to knock out any target. Note: If your shoot the agent and he takes out his gun, do not panic or shoot him again as he will drop off in a matter of seconds. Also use it on the dog.