The Hardy Boys / Nancy Drew Mysteries

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".

The hard-boiled saga of hair-trigger cop Lieutenant Mike Torello and his obsessive pursuit of ruthless gangster Ray Luca.

Stu Bailey and Jeff Spencer are the wisecracking, womanizing private-detective heroes of this Warner Brothers drama. They work out of an office located at 77 Sunset Strip in Los Angeles, California, right next door to a snazzy restaurant where Kookie works as a valet. The finger-snapping, slang-talking Kookie occasionally helps Stu and Jeff with their cases, and eventually becomes a full-fledged member of the detective agency. Rex Randolph and J.R. Hale also join the firm, and Suzanne is their leggy secretary.

A relentless LAPD cop becomes obsessed with taking down the master thief behind a string of daring heists — and only one can come out on top.

Jake and the Fatman is a television crime drama starring William Conrad as prosecutor J. L. "Fatman" McCabe and Joe Penny as investigator Jake Styles. The series ran on CBS for five seasons from 1987 to 1992. Diagnosis: Murder was a spin-off of this series.

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.

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

The Mod Squad was the enormously successful groundbreaking "hippie" undercover cop show that ran on ABC from September 24, 1968, until August 23, 1973. It starred Michael Cole as Pete Cochren, Peggy Lipton as Julie Barnes, Clarence Williams III as Linc Hayes, and Tige Andrews as Captain Adam Greer. The executive producers of the series were Aaron Spelling and Danny Thomas. The iconic counter-culture police series earned six Emmy nominations, four Golden Globe nominations plus one win for Peggy Lipton, one Directors Guild of America award, and four Logies. In 1997 the episode "Mother of Sorrow" was ranked #95 on TV Guide's 100 Greatest Episodes of All Time.

After being duped and going bankrupt, model Maddie is convinced by David to become a partner in a detective agency. Together they solve various cases, while getting comfortable with each other.

21 Jump Street revolves around a group of young cops who would use their youthful appearance to go undercover and solve crimes involving teenagers and young adults.

Detective Cheng is commissioned by Interpol to destroy the Empire of Chaiba, a worldwide criminal organization based in Southeast Asia. He initiates an undercover operation to infiltrate the organization.

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.

Danger Man is a British television series which was broadcast between 1960 and 1962, and again between 1964 and 1968. The series featured Patrick McGoohan as secret agent John Drake. Ralph Smart created the programme and wrote many of the scripts. Danger Man was financed by Lew Grade's ITC Entertainment.

Burnt out on office politics, Agatha Raisin retires early to a picturesque village in the Cotswolds and soon finds a second career as an amateur detective investigating mischief, mayhem, and murder in her deceptively quaint town.

The Mystery Inc. gang solve bigger mysteries while also encountering many memorable celebrities.

Eccentric detective Terry Seattle teams up with clueless celebrity guest stars to investigate a series of murders in this improvisational crime comedy.

This incarnation of the popular cartoon series finds Scooby and the gang living in Crystal Cove, a small town with a long history of ghost sightings, monster tales and other mysteries ripe for the sleuths to solve once and for all. But the longstanding Crystal Cove residents, who bank on the town's reputation to attract tourists, are prepared to do what it takes to protect their turf.

From England to Egypt, accompanied by his elegant and trustworthy sidekicks, the intelligent yet eccentrically-refined Belgian detective Hercule Poirot pits his wits against a collection of first class deceptions.

Alex Cross is a brilliant but flawed homicide detective and full of contradictions. A doting father and family man, Cross is single-minded to the point of obsession when he hunts killers. He is desperate for love, but his wife’s murder has left him too damaged to receive it.

Scooby-Doo and the Mystery, Inc. gang are launched into the 21st century, with new mysteries to solve.