Siren (Millennium)

"'Siren" is the seventeenth episode of the second season of the American crime-thriller television series Millennium. It premiered on the Fox network on March 20, 1998. Millennium concerns offender profiler Frank Black (Lance Henriksen) as he investigates crimes for the Millennium Group. The episode was written by Glen Morgan and James Wong, and directed Allen Coulter. "Siren" featured guest appearances by Vivian Wu, Tzi Ma and Kristen Cloke.

When offender profiler Black investigates several deaths on a cargo ship, he encounters a mysterious woman who shows him visions of a life in which he had never joined the Millennium Group. Upon recovering, his experience leads him to doubt his role in the organisation. "Siren" was viewed by approximately 5.68 million households during its original broadcast. The episode received positive critical reviews, with one reviewer drawing comparisons with the film It's a Wonderful Life.