A show performed at the "Dans le Noir" restaurant in London (UK), where diners eat in a darkened room.

Lots of funny stuff going on here, including a breach of their policy of not allowing customers to stand up without a blind helper. Asking for trouble is this.

Plus, who wants to 'see' a dancer in the dark?

This is literally "selling a pig in a poke"
http://en.wikipedia.org/wiki/Pig_in_a_poke

Olde England is alive and well methinks.