It is 1979; Kenneth Bianchi is apprehended by police for killing two students of the University of Washington; His arrest sends shockwaves across the world of psychiatry and urges an investigation into America's most infamous serial killer.

In the 1970s, Kenneth Bianchi is charged with the murder of two students; Bianchi, in recorded interviews, talks about being familiar with the Los Angeles Hillside Strangler, but investigators feel that he himself may be the perpetrator.

A phone call from Bellingham provides a much-needed breakthrough to the task force; Dr Martin Orne, a world-class psychiatrist is enlisted by the prosecutors to help understand Ken Bianchi's claims of insanity.