Towards Zero, Agatha Christie
The Book At a house party in a September in the 1940s, the "zero point", as described by noted jurist Mr. Treves, when the lives of the aforementioned Mr. Treves; Angus McWhirter; the Stranges, Neville, Kay, and Neville's first wife Audrey; Lady Tressilian, and her companion, Mary; Thomas Royde (childhood friend of Audrey's); Ted Latimer (friend to Kay Strange; and Superintendent Battle converge. Mr. Treves dies of heart attack after announcing he knows the identity of a very calculated murderer. The following night, Lady Tressillian is murdered and everyone else is a suspect for Superintendent Battle to investigate. It doesn't take long for Battle to suss out that the murder has been carefully planned. And now, the whole party is wondering if Mr. Treves was murdered as well. The the Stranges fighting over everything, and Royde and Latimer vying for the attention of Audrey and Kay, confusion reigns. Finally, Angus McWhirter figures it out, not long ...
