Follow The Clues
Your time in CSI: Crime City is often limited, as the game isn't exactly generous when it comes to energy. So it's important to make the most of your time. Occasionally you'll come across an arrow, or a clue, that will guide you in the right direction. Whatever way the arrow is pointing is the direction in which you'll find a new piece of evidence. Following the arrows helps save you from aimlessly investigating the entire crime scene.