You will find clues when you start playing a new scene. When this happens, the timer pauses. If you know one or two other items that you must find, use this time to search the scene and find them. Afterwards, tap the screen to continue the game. The number of points required to earn a new star will increase with each star that you unlock. If you play the same scene repeatedly, you will eventually memorize where each object can be found, allowing you to complete it easily. Although some objects are replaced by others, it is still a useful technique to completing scenes efficiently.