On Friday 15.2.2018 a long- awaited genetical laboratory finally arrived. Students from year two, three and four had a chance to implement their knowledge from genetics to few practical activities. We had a lecture about cloning, genetical engineering or the human genome. In the practical part, student were searching for a culprit of the crime based on the real DNA samples. They had a chance to work with micro pipettes, centrifuge, specialised enyzmes and colors used in the criminology. At the end we found a culprit and students had a lot of fun.