Emily Boynton, stepmother to three children, blackmails the family lawyer into destroying a second will of her late husband that would have freed the children from her dominating influence. She takes herself, the children and her daughter-in-law on holiday to Europe and the Holy Land. At a dig, Emily is found dead and Hercule Poirot investigates.
Rose Morgan, who still lives with her mother, is a professor of Romantic Literature who desperately longs for passion in her life. Gregory Larkin, a mathematics professor, has been burned by passionate relationships and longs for a sexless union based on friendship and respect.