LGBTQIA+ romance, with a side of murder mystery

The main case is about a serial killer who burns their victims to death. Has supernatural elements ("vampires," supernatural abilities) as well as the murder mystery/investigation. Detective x captain pairing + coroner x assistant pairing. Some enemies-to-lovers elements. BL.

Trigger warning: Blood drinking, mild gore.
NCs: Yes
AI: Some, rarely interferes with enjoyment IMO

A legitimate murder mystery at its core, despite a few conveniences. The main case is the ritualistic murder of seven seemingly unconnected victims. Has supernatural elements (ghosts, magic). Detective + consultant pairing, enemies-to-lovers. BL.

Trigger warning: Gore in the uncensored version,; obviously, ghosts. Contains jump scares!
NCs: Yes, mild.
AI: No

The main case is about a serial killer going after a specific group of college friends. The murder mystery in itself is underwhelming, but the kills and slasher vibes hit the spot. Detective x detective pairing. BL.

Contains jump scares!
NCs: Yes, mild.
AI: No

The main investigation involved a vigilante serial killer who bases his kills on an underground manga. Plays fair with the spectators; can be a bit obvious. As usual, doesn't show great police work, but compensates in other ways. Detective x consultant pairing. Bromance.

Trigger warnings: Physical assault, mild gore.
NCs: None
AI: No

The main investigation is about a (mostly) woman-killing serial killer case spanning decades. Relies more on coincidences than I'd like. Detective + CSI pairing. GL.

Trigger warning: Mild gore.
NCs: Yes
AI: No

Isn't really a murder mystery, but it features a cop main character who is trying to bring down a human trafficking ring. More supernatural (ghosts, magic) than investigative at this point, but it's very early in the show. Detective x shaman pairing. GL.

Trigger warning: Obviously, ghosts. Contains jump scares!
NCs: Yes, mild (Till episode 3. This might change.)
AI: No

It's not a murder mystery at its core, but there are a few murders committed by a certain culprit; there's an investigation in the show, and enough evidence is given to people who are watching so that they find out whodunit before the reveal. Has what may be seen as supernatural or sci-fi elements (foreseeing the future, mostly) Doctor x college student main pairing, cop x suspect pairing, and others. BL.

Trigger warnings: Bullying, some gore.
NCs: Yes, wild.
AI: No

It's a mystery, though not exactly/only a "murder mystery". It has typical slasher vibes - a group of friends goes on vacation to an isolated cabin in the mountains, and someone starts killing them. Why? Multiple student x student pairings. BL, but has much less romance than suspense and horror.

Trigger warnings: Child abuse, illegal age gap, extreme bullying, mild gore. Contains jump scares!
NCs: Yes, wild.
AI: No

The main investigation is about a serial killer who murders terminally ill people. There's a lot of investigation, but much more than that. Has less romance than perhaps would be expected, but what there was, I bought. Cop x doctor pairing. BL.

Trigger warning: Euthanasia.
NCs: One, mild.
AI: No

Focuses on an investigator whose father was accused of murdering his boss, and a prosecutor who happens to be the son of said boss. They try to find the truth behind what happened decades earlier, and also investigate other cases - some of them related to the past. Investigator x prosecutor pairing, enemies to lovers elements. BL.

Trigger warnings: Abuse of power, drunken intimacy, bullying.
NCs: Yes, wild.
AI: Some, rarely interferes with enjoyment IMO

A mystery, not a murder mystery per se. A cop turns up at an old friend's place and finds out that he isn't there (though he said he would be). He confuses the man who's temporarily living there with his friend's brother, but he's actually a contract killer who was sent there to kill said friend... Suspicions, drama and unlikely romance ensue. Cop x contract killer pairing, enemies to lovers elements. BL.

Trigger warnings: Mild gore, drug use
NCs: Yes, mild.
AI: No