Near park # 3 you will see two guys standing over some guy, go check the guy, he is dead. His phone rings, answer it. The guy on the phone will tell you to leave th park, do so and he calls back. He will say to go to Bachus and get the key from a woman. Go there and she will ask for a password, tell her you were not told it. She tells you about your mission and gives you key # 20 (long dagger). Walk out of the locker room, you will get a call, head to theater square, guy calls, turns out you are the target, he is in the batting cage. Talk to him, he attacks you, beat him, he apologizes and gives you a bullet proof vest. get 500 exp.