A scientist uses an escapee from a psychiatric hospital as a guinea pig for his invisibility serum. It works and Robert Griffin goes on a revenge spree.

Whilst Jon Hall was great in The Invisible Agent, his character here is so bland and frankly unlikeable especially as a lead character.

But at least we also get John Carradine who is great here, as he is in most of his films.

The darts scene in the pub is hysterically funny but the rest of the film is middling to say the least. If only it was all as inspired as this priceless scene.

Not the best of the Invisible films but I’m glad I got to see it just the once. In other words, I never thought I’d rather do chores than watch this. Not the best compliment for a film but…

2.5 out of 5 stars