The Night Stalker (1972) on Netflix

From a tape made by reporter Carl Kolchak Darren McGavin]. "This is the story behind one of the greatest manhunts in history. Maybe you read about it--or rather what they let you read about it probably in some minor item buried somewhere on the back page. However, what happened in Las Vegas between May 16 and May 28 of this year was so incredible that, to this day, the facts have been suppressed in a massive effort to save certain political careers from disaster and law enforcement officials from embarrassment. This will be the last time I will ever discuss these events with anyone. So, when you have finished this bizarre account, judge for yourself its believability. And then try to tell yourself, wherever you may be, it couldn't happen here."