Veronica Mars (2004)

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".

Genius detective Nero Wolfe and his right-hand man, Archie Goodwin, solve seemingly impossible crimes.

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.

Toronto’s only female private detective in the 1920s takes on the cases the police don’t want or can’t handle. From airplanes and booze running to American G-men, Communists and union busters, Frankie’s fearless sense of adventure gets her into all kinds of trouble, but she always manages to find her way out.

Professor Jasper Tempest, a genius Cambridge University criminologist with OCD and an overbearing mother, advises the police. British version of the Belgian crime drama of the same name.

Our lady sleuth sashays through the back lanes and jazz clubs of late 1920’s Melbourne, fighting injustice with her pearl handled pistol and her dagger sharp wit. Leaving a trail of admirers in her wake, our thoroughly modern heroine makes sure she enjoys every moment of her lucky life. Based on author Kerry Greenwood's Phryne Fisher Murder Mystery novels.

The sharp, witty and enigmatic DI Annika Strandhed, as she heads up a new specialist Marine Homicide Unit (MHU) that is tasked with investigating the unexplained, brutal, and seemingly unfathomable murders.

Sam Swift, the former star of a hit cop series whose epic breakdown is broadcast to the public and sends her to rehab. Desperate to restart her career, she talks her way into shadowing lone-wolf private investigator Eddie Valetik as research for a potential comeback role. Though Eddie resents the babysitting gig, high-spirited Sam uses the skills she learned as an actor playing a cop and proves herself to be surprisingly valuable.

Investigator Alexa Crowe, cannot help fighting the good fight – whether it is solving murders or combatting the small frustrations of everyday life. Fearless and unapologetic, Alexa's unique skills and insights into the darker quirks of human nature, allows her to provoke, comfort and push the right buttons as she unravels the truth behind the most baffling of crimes.

Mick St. John is a captivating, charming and immortal private investigator from Los Angeles, who defies the traditional blood-sucking norms of his vampire tendencies by using his wit and powerful supernatural abilities to help the living.

Thrown together by the murder of John's neighbour, John and Janie are an odd, yet hilarious duo with opposing instincts. Every week, they get to the bottom of gripping murders, with various stunning Welsh locations providing a backdrop to their investigations.

Working from his home in a converted windmill, Jonathan Creek is a magician with a natural ability for solving puzzles. He soon puts this ability to the use of solving impossible crimes and mysterious murders.

Ex-pro hockey player Matt Shade irrevocably changes his life when he teams up with fierce P.I. Angie Everett to form an unlikely investigative powerhouse.

The cases of master criminal defense attorney Perry Mason and his staff who handled the most difficult of cases in the aid of the innocent.

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.

Baretta is an American detective television series which ran on ABC from 1975 to 1978. The show was a milder version of a successful 1973–74 ABC series, Toma, starring Tony Musante as chameleon-like, real-life New Jersey police officer David Toma. While popular, Toma received intense criticism at the time for its realistic and frequent depiction of police and criminal violence. When Musante left the series after a single season, the concept was retooled as Baretta, with Robert Blake in the title role.

Nancy Drew makes plans to leave her hometown for college, but finds herself drawn into a supernatural murder mystery instead.