A friend of Brady’s, airline pilot Arthur Holt (Philip Friend), is convinced that his plane is being used for drug smuggling.  His co-pilot Sandy Mason (Jack Watling) is implicated in the smuggling ring and frames Arthur.  Before Arthur can tell the authorities all he knows about the smugglers, he’s shot – with the only witness to his attempted murder being his blind wife, Katherine (Honor Blackman).

A generous amount of the story – the first five minutes – is used to set everything up.  It’s pretty evident right from the start that Arthur is honest whilst Sandy has something to hide (Watling ensures that Sandy looks more than a little shifty).

Jack Watling, father of Invisible Man co-star Deborah, had form for appearing in series which featured his daughter (Doctor Who being the other notable example).  He’s just one member of a very strong cast who help to enliven this story.  Honor Blackman, a few years away from finding fame as Cathy Gale in The Avengers, is another but it’s Leslie Phillips as the cold-hearted Sparrow who makes the most vivid impression.

More used to playing comedy, Phillips plays it dead straight as the well-spoken “Cock” Sparrow, who calls at Arthur’s house, claiming to be a friend of his.  But when Arthur turns up, he shoots him and makes a swift exit.  Did Sparrow know that Katherine was blind and would therefore struggle to describe him?  Even if he did, it seems a little foolhardy to have struck up a conversation with her, as proves to be key in bringing him to justice.

Robert Raglan plays Detective Inspector Heath, yet another police officer completely unfazed at the prospect of receiving assistance from an invisible man, whilst the very recognisable Desmond Llewelyn hovers in the background as his sergeant.

Blind Justice (ah, do you see what they did there?) makes few calls on Brady’s special power until the last few minutes – as Brady convinces Katherine to pretend she can see (and helps her along the way)  so that she can walk up to Sparrow and convince him that she saw him shoot her husband.  Brady hopes that this will break his nerve and make him confess all.

A fairly routine crime story then, but the London location filming and the incredibly impressive guest cast (especially Honor Blackman and Leslie Phillips) are more than adequate compensation.