Wayward. Hazard and Somerset: A Union of Swords, #4

Emery Hazard is trying to plan his wedding, even though his fiancé, John-Henry Somerset, isn't exactly making things easy for him. To be fair, Somers has been distracted lately; his father is running for mayor in a hotly contested election, and their hometown is splintering under the weight of divisive politics. In a matter of hours, those poisonous politics invade Hazard's life in a way he couldn't have imagined.
Glenn Somerset, Somers's father, shows up on their doorstep, and he wants two things: first, for Hazard to neutralize a blackmail threat; and second, for Somers temporarily to move out of the house he shares with Hazard, part of public relations stunt to win the election. To Hazard's shock, Somers agrees. Determined to lose himself in his work, Hazard takes on a missing person's case, but his investigation only leads him deeper into the tangled web of small-town politics.
To find the truth, he must face off with the viciously rich who rule Wahredua-and with the poor, desperate, and marginalized, who fight just as viciously in their own way. When Hazard's investigation uncovers a murder, he is forced to work with Somers to bring the killer to justice, despite their fractured relationship. But the sudden news that Hazard's father is failing fast threatens to put an untimely end to the case-and, in doing so, jeopardize Somers's last-ditch effort to repair his relationship with his own father.
The killer, though, has an accelerating timeline, and in a world of wayward children, every relationship is fraught with hidden dangers.