Board Thread:Questions and Answers/@comment-89.243.63.42-20150613000136/@comment-25704189-20150616023956

You need a certain amount of points to earn a star. The higher your score/points, the sooner you earn a star. If you are a good player, you can get a star on a new scene in two tries = 40 energy. If you are a very slow player it might take you six tries = 120 energy.

Pets that find points mean you will earn stars even quicker than before. If you aim for top scores then those pets can give you an even higher score.

Watch the animation after you play a crime scene. It explains it all. Your points are added to any bonuses you earned and then that is used towards earning a star.