Broken Chains

Somebody is raising Boston's dead. Emma Walsh just took the pulse of the one man in the city who can stop it — and her whole world went quiet.
Emma has spent twelve years as a paramedic running toward death — and feeling it coming before her monitors do. She's hidden the death-sense her entire career. It's cost her everything soft in her life, and she's made her peace with that.
Then a stranger steps in front of a speeding car to save a child, shatters half his skeleton, and heals on the curb in twenty minutes. When Emma takes his pulse, two things happen: a bond older than the city detonates behind her sternum. And for the first time in her life, the screaming goes silent.
Azrael was the Angel of Death. Now he runs Boston's supernatural emergencies, cooks like it's a love language, and has never once — in six hundred years of being feared — wanted to keep something for himself. Until her.
But beneath the city, the uncrossed dead are being bound into an army. Tricorn hats. Musket fire. Eyes like grave-light. And the necromancer building it knows Boston's magical underbelly better than anyone alive — because he's one of the men who's spent his life holding it together for no thanks and less pay.
She runs from intimacy the way she runs toward death. He's about to stand still long enough to catch her.
Tropes & content include: fated mates · he falls first (and cooks) · sunshine hero x armored heroine · hidden power disguised as competence · blue-collar magic vs. old money · found family · hurt/comfort

Steam: explicit, high heat. 18+.

HEA: yes — no cliffhanger. Reads as a standalone.
Book 4 of The Fallen Response Unit: fallen angels running the supernatural emergencies no one else can survive.