Struggling mystery author Claire Denman is enjoying a relaxing vacation at her brother's secluded house in the Sunshine Coast of British Columbia after helping a wealthy elderly woman move her cats across the country. The woman happens to be the wife of the man Claire had an affair with 30 years ago and she happens to be renting Claire's brother's rental property next door. Claire's days are filled with writing poetry, birdwatching, and exploring the nearby town. But then strange things begin to occur on the property. Claire finds messes she doesn't remember making, objects start to go missing, and entire days are seemingly missing from Claire's memory. So, when the elderly lady is found murdered, how can Claire be sure she wasn't somehow involved? The Last Unsuitable Man is a slow-burn thriller filled with twists that no one—least of all the victim—could see coming.