Have you ever had that discussion where you talk about what the worst possible way to die would be for you? Well I think I now can add being on a submarine to that little list.

The story flicks between characters when they are on the submarine and how they got to be on there. As there are a few characters it did take me a little while to settle into getting to know who is who but that didn't stop me from being fully emerged into what was going on.

I can only describe this story as being claustrophobic and suffocating. I mean that in the bestest possible way. The author drags you into the story so it feels like you are trapped on the vessel with the characters. At times I could totally empathise with the characters as I could feel the madness setting in.

If it wasn't bad enough to be stranded on the submarine the fact that there is a murderer amongst them makes it way more unbearable. I honestly didn't know which one was worse, a possible death from lack of oxygen or being murdered. It was a total guessing game as to who it could be. As soon as I thought it could be one person, something happened which totally squashed that idea and I was back to square one.

Pressure reminded me very much of Agatha Christie's, And Then There Were None. It is crammed pack full of suspense that intensifies the further into the story you get. This is one thriller that will seriously mess with your head with shocks and surprises a plenty. An absolute must read for fans of a gripping psychological thriller that will leave you gasping for air.

This book builds up the pressure until you think you will explode with anticipation. Brilliant written and totally engrossing.