The description of this production begins: “Billy Milligan is a young man struggling with Multiple Personality Disorder (MPD) who is accused of crimes that he believes he did not commit. Tormented by 24 different personalities, every day is a struggle to gain control of his life….” Can you imagine that? Having that kind of racket going on inside your head? It’s not something I’d ever considered before seeing this extraordinary production and when it finished, I emerged much better informed… but I’m getting ahead of myself.

This was my first time at the Salvation Army venue, and what terrific opportunities it provides for a larger scale production. Entering the auditorium, you are very disoriented by both the overall darkness and also the luminescent blue from the back screens; they create a slightly disturbing and unnerving 3-D effect. Actors in the dark are prowling around, lounging, languishing; you don’t know who any of them are or why they’re here. You can tell from looking at the evidence boards at the back that you’re in the police station. You think at some point that you’ll probably get to scrutinise and understand these boards, to get a better picture of what Billy Milligan did. You don’t. But that is one of the fascinations of this production, the huge effort into detail that has obviously taken place, literally in the background, but that you don’t get to examine. A lot of love has gone into this production.

Focus on Billy Milligan – he’s clearly suffering mental agony. He’s no recollection of doing anything that he’s accused of – but the CCTV shows him, fair and square, assaulting various women in accordance with the accusations against him. He must be lying – or so the detective in charge believes. We see the detective interviewing Billy – but wait – it’s now a different actor playing Billy; Ben Hampton, who had played him in the first scene – and whose photo adorns the crime board on the back wall – is now playing the detective… Was there a last-minute re-casting? What’s going on?

What’s going on is a brilliantly inventive way of showing Billy’s MPD with a variety of actors portraying the characters behind the different voices in Billy’s head. One hears of people saying they heard “voices”; what I’d never thought about (and if this is my lack of imagination, please excuse me) is that these different voices are like different people; a six-year-old Liverpudlian girl, an assertive American guy, a sassy aggressive know-it-all chick, a sullen sulk. Men, women, girls, boys, all races, all ages, they’re all in Billy Milligan, and this superb piece of drama brings that multitude to life with humour, passion, tension and shock. Billy Milligan really existed, incidentally, although this play doesn’t represent him in any kind of factual or documentary way – our Billy was born decades later, is considerably younger, isn’t in America but in the Salvation Army hall in Northampton. This production stamps its own individualism on the story.

It’s a show of so many highlights: Billy’s victims, unable to come to terms with talking about what has happened to them; Ben Hampton silently reciting the words of all the other Billies as they take control of him; Liam Faik’s confused and cornered Billy nearly crumbling under the detective’s questioning; all the brilliant characterisations of the sub-Billies but perhaps most strikingly Victoria Rowlands’ young Elizabeth, and the hard-nosed bitch of a doctor who won’t believe that MPD exists; the meticulous mime scenes, which culminate in the other Billies each passing over one item of clothing to the real Billy, representing how he eventually acquires the other characters as part of himself; and the scene which made me cry, where Billy recounts to the doctor how his childhood was affected by his father – again brilliant use of video in the background that suggests just enough of what happened without having to spell it out.

Fantastic ensemble work, superb characterisations by all the cast; it was shocking, surprising, enlightening; it drew out humour from the most unlikely places; I absolutely loved it. This show should certainly have a life after Flash. Congratulations to you all!