Detective Investigation Files IV

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".

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.

The adventures of Miss Jane Marple, an elderly spinster living in the quiet little village of St Mary Mead. During her many visits to friends and relatives in other villages, Miss Marple often stumbles upon mysterious murders which she helps solve. Although the police are sometimes reluctant to accept Miss Marple's help, her reputation and unparalleled powers of observation eventually win them over.

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.

Mystery and suspense series based on Robert Parker's "Spenser" novels. Spenser, a private investigator living in Boston, gets involved in a new murder mystery each episode.

Detective Inspector Ray Lennox investigates the disappearance of a schoolgirl while battling cocaine addiction and a mental breakdown.

After years as an MI6 operative, Sylvia winds up in a village in Umbria visiting her sister Isabel and becomes involved in a murder investigation.

Murder in Suburbia was a British detective drama that ran for two series in 2004 and 2005. Detective Inspector Kate Ashurst, a graduate of a posh girls' academy, has a sharp, analytical mind; her working-class partner, Detective Sergeant Emma Scribbins, relies on her instincts. Together this sassy, sexy investigative team uncovers the dark urges behind suburban Middleford's placid façade.

A prisoner on death row in the US, a vicar in a quiet English town, and a maths teacher trapped in a cellar cross paths in the most unexpected way.

When Detective Kat Donovan matches on a dating app with the fiancé who disappeared years before, she learns that some secrets are best left in the past.