Post 9/11, all the rules have changed.

In V R Morse's powerful drama torture is now "physical coercion" and can be approved by one phone call. The Geneva Convention is little more than a guidebook.

Two opposing ideologies meet in an interrogation cell in a race to prevent a potential terrorist attack.

Michael Adams's Suspect is an intelligent former doctor who speaks of a world inhabited by "genitals with appetites".

He adeptly winds up his two interrogators, baiting the quick-to-anger American (Rob Maloney) while ignoring by-the-book English woman (Suzanne Procter), driving them ever closer to the unthinkable.

The play is even-handed; we may not agree with Suspect's outrageous verbal attacks, but they are based in truth. And when American Abe shouts of Western freedom, we can see cracks in his argument.

The cast is uniformly excellent, with Kate Dyson's Control a chillingly calm presence when she joins the interrogation, and police officer Steven Parsons making the best of a small role.

The only faltering in this engrossing play is a past love affair between the interrogators, which provides an antagonistic opening but then goes on to be largely forgotten.