The Reanimator's Heart - The Reanimator Mysteries, #1

A reluctant necromancer, a man killed before his time, and the crime that brings them together. Felipe Galvan's life as an investigator for the Paranormal Society has been spent running into danger. Returning home from his latest case, Felipe struggles with the sudden quiet of his life until a mysterious death puts him in the path of the enigmatic Oliver Barlow. Oliver has two secrets. One, he has been in love with the charming Felipe Galvan for years.
Two, he is a necromancer, but to keep the sensible life he's built as a medical examiner, he must hide his powers. That is until Oliver finds Felipe murdered and accidentally brings him back from the dead. But Felipe refuses to die again until he and Oliver catch his killer. Together, Felipe and Oliver embark on an investigation to uncover a plot centuries in the making. As they close in on his killer, one thing is certain: if they don't stop them, Felipe won't be the last to die.