Absent in the Spring
This is a different sort of Agatha Christie novel, written under her pseudonym Mary Westmacott, that's complicated, witty, twisty and suspenseful in ways that have nothing to do with crime. The title comes from a Shakespeare sonnet; the novel itself is a character study, about a woman who begins to reassess her life after finding herself alone for the first time—and is none too easy with what she sees. Christie claimed to have written this novel in an incredible three days.
Returning from a visit to her daughter in Iraq, Joan Scudamore finds herself unexpectedly alone and stranded in an isolated rest house by flooding of the railway tracks. This sudden solitude compels Joan to assess her life for the first time ever and face up to many of the truths about herself. Looking back over the years, Joan painfully re-examines her attitudes, relationships and actions and becomes increasingly uneasy about the person who is revealed to her.