The strength of this doc lies elsewhere, in its more robust and authoritative storytelling style and professional sheen that make it more difficult to call it circumstantial and speculative.

In "Last Man Standing," Broomfield comes close to answering the questions - of guilt and recrimination - that have hung over these murders for too long.

A startlingly scattershot piece of filmmaking from a director who normally has a sure, personal hand on his projects.

There is some considered debate about what really happened, but nothing more than conjecture that most viewers will have guessed anyway. Come for the archive footage, but dont expect any answers.