First go to Fawn, talk about the Don, sleep and again talk to her, then go to Police (to Arlene) , they say they cant do anything, go to slums (under Don house), and pay 2300 (or 1000), sleep, go back but the guy who you give the money isnt there, go to gentelman club and take 500 Credit, give it back to slums, sleep, go to Police and Arlene help you. For sure talk again to Fawn and Sammy and Lin Lin, they give you information for sneek the guard, dont forget to ask Lin Lin to take the guard Keys. Sorry for mistakes