Following the death of her husband, Lady Darby has taken refuge at her sister's estate, finding solace in her passion for painting. But when one of the house guests is murdered, her brother-in-law asks her to aid the insufferable Sebastian Gage-a fellow guest with some experience as an inquiry agent. While Gage is clearly more competent than she first assumed, Kiera isn't about to let her guard down, as accusations and rumors swirl. When Kiera and Gage's search leads them to even more gruesome discoveries, a series of disturbing notes urges Lady Darby to give up the inquiry. But Kiera is determined to protect her family and prove her innocence, even as she risks becoming the next victim.