England, 1936. After a scandalous celebrity divorce, British tennis star Nevile Strange and his ex-wife Audrey make the unthinkable decision to spend a summer together at Gull's Point, their childhood home and the coastal estate of Nevile's aunt, Lady Tressilian.

With unfinished business between the former childhood sweethearts, plus the presence of Nevile's new wife Kay, tensions are running high. Add to this a long-suffering lady's companion, a mysterious gentleman's valet, an exiled cousin with a grudge, a venerable family lawyer, an inquisitive orphan and a French con man, and soon there will be murder. A troubled detective must rediscover his purpose to untangle a toxic web of jealousy, deceit and dysfunction. Can he solve the crime before another victim meets their death?

An explosive love triangle, a formidable matriarch and a house party of enemies. All compelled… Towards Zero.