This activity is designed to give students practice with the properties of special quadrilaterals (parallelograms, rectangles, rhombuses, squares, trapezoids, and kites). The students are provided with a "murder mystery" sheet with descriptions of each "suspect" and a "line-up" of twelve suspects (different quadrilaterals with their properties). The students must decide which suspect(s) from the line-up meets the description. The "guilty" quadrilateral will be discovered at the end of the activity.