Ternion of Tarr is a fantasy story with strong whodunnit generic aspects.
In a realm where magic is both a blessing and a curse, twenty-year-old Rill Narin, unjustly imprisoned for a crime she didn't commit, hides a dangerous ability—she is a Tangler, capable of temporarily inhabiting other bodies. This illicit skill provides brief escapes from the prison's harsh reality, but her secret life takes a dark turn when she inhabits the Earl of Tarr's daughter and witnesses a demonic murder. Now entangled in a deadly conspiracy, Rill reluctantly partners with the unyielding Constable Sabella Rivers and the aristocratic Lady Keeva Dalton. Together, this unlikely trio navigates a web of secrets and peril, racing against time to unmask a diabolical murderer before they become the next victims.
The story is told in present tense via the POVs of Rill, Sabella and Keeva.