L.A. Crimes is an expansion for Detective: A Modern Crime Board Game, it has the same concept and uses most of the base rules, with a few changes depicted in this rulebook.

The Investigative Team still works together and shares all Stress, Authority, and Skill tokens. You still will not be able to go through the entire deck, so you will need to deduce your answers. Every case consists of 36 cards - a cover and 35 "lead" cards. Remember what you learned before, it is always good to cast a wide net on your case - no single card provides an answer to the case.