Vampire Detective (2016)

In the fictional town of Neptune, California, student Veronica Mars progresses from high school to college while moonlighting as a private investigator under the tutelage of her detective father.

Frank Hathaway, a hardboiled private investigator, and his rookie sidekick Lu Shakespeare form the unlikeliest of partnerships as they investigate the secrets of rural Warwickshire's residents.

Barnaby Jones is a television detective series starring Buddy Ebsen and Lee Meriwether as father- and daughter-in-law who run a private detective firm in Los Angeles. The show ran on CBS from January 28, 1973 to April 3, 1980, beginning as a midseason replacement. William Conrad guest starred as Frank Cannon of Cannon on the first episode of Barnaby Jones, "Requiem for a Son" and the two series had a two-part crossover episode in 1975, "The Deadly Conspiracy".

Private detective Mike Hammer hunts down criminals on the mean streets of New York City.

Forever Knight is a Canadian television series about Nick Knight, an 800-year-old vampire working as a police detective in modern day Toronto. Wracked with guilt for centuries of killing others, he seeks redemption by working as a homicide detective on the night shift while struggling to find a way to become human again. The series premiered on May 5, 1992 and concluded with the third season finale on May 17, 1996.

Cranky but likable L.A. PI Jim Rockford pulls no punches (but takes plenty of them). An ex-con sent to the slammer for a crime he didn't commit, Rockford takes on cases others don't want, aided by his tough old man, his lawyer girlfriend and some shady associates from his past.

Two teen ghosts work alongside a clairvoyant to solve mysteries for their supernatural clientele — until a powerful witch complicates their plans.

A spirited con woman and a demoted by-the-book detective are given the chance to redeem themselves. The catch? They have to find a way to work together each using their unique skills to solve crimes.

When Jaehee, a top call girl at a club in Gangnam, goes missing, Detective Kang Dongwoo returns to crack the case. Prosecutor Min Seojin aims to rise in rank, while the notorious pimp, Yoon Gilho becomes a prime suspect. They unravel a web of secrets and connections behind the case.

Park Ji-sang, a surgeon, leads a double life. While he tries to save his patients' lives, on the other hand, he is also a vampire who constantly craves for blood.