Phelps investigating a lipstick tube

Clues are a gameplay feature in L.A. Noire. They can be used as evidence and be used to push the boundaries with a Person of Interest. An example is using the reciept for a live hog to interrogate Frank Morgan while trying to find Adrian Black. Some clues consist of Weapons, Papers, and more.

Phelps investigating a FN browning.

There are useless clues and helpful clues. Useless clues consist of bottles, shears, litter and figurines.