Our memories are our most prized possession. They are a reminder of who we are, where we've come from and what we've achieved. But what happens when our memories are no longer reliable and begin to fail us? Initially performed at La Mama Theatre's 2013 Explorations season, Black Hole Theatre's The Book of Revelations is an immersive, performance installation on the disorienting experiences had by people with dementia and other mental illnesses. Alison Richards, who also serves as writer of The Book of Revelations, delivers a strong and captivating performance as Ada as she cleverly shares snippets of her memories and thoughts through operatic moments, utilising the beauty of the sung voice to contrast the internal horrors that are unfolding. The use of Tchaikovsky's "Dance of the Sugar Plum Fairy" from The Nutcracker heightens the tension as the nightmare continues while exposing the vulnerability of Ada as she succumbs to her illness.