Exhausted by her recent worldwide tour, international cellist Sara Selkirk nevertheless allows herself to become involved with a local amateur opera group, partly because of her continuing on-off affair with DCI Andrew Poole who is also a member. Sara has plenty of cause to regret her involvement as the other members of the group continue to bicker and squabble. There's faded opera diva Helene with her autistic daughter, Adele; vain but untalented composer Cosmo with his long-suffering girlfriend Poppy, not to mention Andrew's embittered wife, Valerie. Sara suspects that their forthcoming rendition of Cosmo's opera about Beau Nash is not going to be a success. What she doesn't expect to encounter is sudden, violent death.