The Hunt for the Unicorn Killer (1999)

Fact-based story of Ira Einhorn, a '70s peacenik who is generally credited as one of the founders of Earth Day. In the late '60s and early '70s, Ira lived with Holly Maddux. But when she tries to leave him in 1977, she suddenly disappears. Later, her body is discovered in a trunk in Einhorn's apartment. Let out on bail, Einhorn flees the country and manages to elude authorities for years. Meanwhile, he is convicted in absentia and sentenced to prison. Holly's father is determined to see his daughter's murderer brought to justice and has him tracked; Einhorn is eventually caught in France in 1997. Martin Donovan appears as the assistant D.A. who put the case together. Today, Einhorn is now appealing his conviction.