Who is more dangerous? An enemy? A friend? Or a lover? Bonnie Graham is standing in her friend's flat. She is alone, except for the dead body lying in a pool of blood on the floor. What happened? What will she do? And what role has she played in the murderous events? Bonnie is a music teacher who has spent a long, hot summer in London rehearsing with a band to play at a wedding. It was supposed to be fun, but the band members find the complicated knots of their friendships unravelling as the days themselves unwind. What was meant to be a summer of happiness, love and music turns deadly as lovers betray one another, passions turn murderous and friendship itself becomes a crime. Everyone tells lies. But is anyone prepared to tell the truth to uncover a murderer?