Felix Roberto Roisman, 48, dedicated his life to scientific research. A chemist, CONICET researcher, and lecturer at the Universidad de Buenos Aires School of Exact and Natural Sciences, he also contributed to the Hospital de Clinicas Genetics Unit. Married to Marta, also a researcher, and father to Dina, Felix balanced his time between family and continued work at home. He was recognized nationally and internationally for his research, published in both Argentine and foreign journals. On the morning of July 18, 1994, as Felix was walking to his job along Pasteur Street