An environmental analyst is asked by the police to determine if two deaths by hydrogen sulfide poisoning are an accident - or a murder. But when he meets a young woman at both sites, a scientific mystery begins.
1943
2024
2011
1964
2003
1950
1967
2009
2017
1996
2005
2020
1983
1939
2010
1975
2025
2012
1987