The Murder Mystery Layering Set is a 6 x 10 mL layer-your-own perfume kit. It pairs I Don't Know What, the transparent radiance enhancer, with five ready-to-layer suspects including Pat Von Chouli, Prince Amber and Professor Rose. Wear any one alone, or spray two and three together to build a blend nobody else owns. Each 10 mL bottle holds a full formula, so the accords stack properly instead of muddying. A hands-on way into the D.S. & Durga collection, and a genuinely fun gift for a fragrance person. Solve the case. Unisex. Six 10 mL bottles, five layering scents plus the I Don't Know What enhancer. Spray one on each wrist and compare, then commit to a combination. A strong gift for a fragrance enthusiast who already owns plenty of finished perfumes.