This detective kit should help with the forensic sceince unit I'm planning. It just arrived and so far I'm impressed. There are hours of data on CD. I was up till 2 AM last night reading! I tested fabric samples for blood with the heme Sticks today and it was fun, just like on TV. The test will provide some instant gratification for the students. I still don't know whodunit yet. I'll wait to open the solution envelope until I'm good and ready.