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.
![Laplace’s-Witch-2018](http://193.22.146.146/wp-content/uploads/2018/12/Laplace’s-Witch-2018.jpg)
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.