THE ERLENMEYER FLASK
A TERRIFYING EXPERIMENT IN ALIEN BIOLOGY TESTS SCULLY'S SKEPTICISM AND RISKS MULDER'S LIFE, WITH FATAL CONSEQUENCES FOR MULDER'S MOST TRUSTED ALLY.
A fugitive running from police is shot trying to escape but jumps into a bay; he leaves traces of green blood behind. Deep Throat, Mulder's mysterious government informant, eggs him on to investigate a case even though there seems nothing to go on. They visit a researcher connected with the fugitive and find him conducting DNA experiments; later the researcher is killed and Mulder asks Scully to analyze the contents of some of the laboratory flasks. When the fugitive resurfaces and Scully's research turns up some highly unusual viruses, Mulder and Scully begin to close in on the biggest secret they have ever uncovered. Mulder risks death to protect the fugitive, whose very blood may prove the existence of extraterrestrial life. Scully confronts evidence that shakes her fundamental beliefs, and Deep Throat puts his life on the line to save Mulder.