As a critic, this is not my usual fodder, but as a fan of the novel I thought I'd give it a go.
I have to say from the outset that I was so impressed by the 10 cast members, many of whom played a range of characters and switched from one to the other instantly with differentiation made by a change of accent and costume excellently. Sadly I did not pick up a programme for some reason and so I am unable to name the cast.
The actors playing the main roles; Frankestein, Henry and the Monster, did so excellently. I especially liked the interpretation of Frankenstein's Monster, so wanting to be loved and yet shunned by all, the characterisation of the old professor and of the blind lady who gave the monster refuge.
There are three other elements that I would like to talk about from within Frankenstein:
The use of 'playback', the use of modern music and the dancing.
The use of 'playback' (playing pre-recorded speech) worked brilliantly. I especially liked when the playback finished and the actor carried on.
With the other two elements I was unsure how I felt, if truth be told. The modern music was distracting at first, but it had obviously been chosen to enhance the scenes as with most I could see some link between the lyrics and the scene being played out. The dancing, although excellent, I could not understand as I do not feel it added to the story.
As said, this is not my usual 'thing' at the theatre, but at the end of the day I had an enjoyable evening of entertainment that had me gripped and intrigued for the majority of the time.