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.
2016
1944
1978
1981
2022
2015
2020
1960
2006
2000
2018
—
2019
2011
1971
1984
2001
1956
2017