Maxwell Reed is the 'dark man' of the title who murders someone to steal his money and then decides his best course of action is to eliminate any potential witnesses who can point the finger at him. This includes a cab driver and actress Natasha Parry (Molly) who happens to be cycling by at the wrong time. Scotland Yard stick detective Edward Underdown (Jack) by her side for 24-hour police protection. Well, he's not very good at his job....
The film does have some tense sequences, most memorably Parry's visit to the isolated beach where she notices Reed's menacing presence sitting close by to her. Run, girl! There are, however, some daft plotlines. I mean, let's face it, Parry would have been killed on more than one occasion in reality. Unfortunately, the film's end sequence goes on for too long and contains too many characters from the army, police and wherever and it doesn't provide any real tension. We just get people running around and shooting at one another. Boring.
There is a very amusing line of dialogue when Underdown is briefed on his task to protect Parry and he is told that she might be good looking. Ha ha. Yep, that is the motivation for everyone. Off he goes on his new assignment with some hope. Is Parry a babe?