High Flyer achievement/trophy is unlocked when you find the newspaper at Juan Garcia Cruz's house during the case Reefer Madness. It is located in the back room to the left on some soup crates. This leads you directly to 20th Century Market bypassing the need to journey to Parnell's Soup Co. Factory. Note that once all clues are found at the house you must go directly to the market and not the factory to unlock this achievement. It will not unlock if you decided to interview Howard Parnell. You can still get a 5 star rating however if immediately after you unlock the achievement/trophy, you quit and resume the game. You will be back at Cruz's house.