Synopsis
Created as a mystery, police and crime drama spin-off of Masterpiece Theatre; from 1980 to 2007, Mystery! aired mostly British crime series purchased from or co-produced with the BBC or ITV and adapted from British mystery fiction. In 2002, due to pressure to include more American material, a series based on the novels of US mystery writer Tony Hillerman was produced, but the vast majority of Mystery! programming has always been and continues to be British literary adaptations co-produced with UK-based production companies. In 2008, PBS combined Mystery! with Masterpiece Theatre under the umbrella title Masterpiece, which includes the sub-brands Masterpiece Classic, Masterpiece Mystery!, and Masterpiece Contemporary.
Episodes
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Retired archaeologist and crossword setter Judith Potts believes that a brutal murder has taken place in the sleepy town of Marlow; when the police refuse to believe her story, she kicks off a private investigation with two unlikely friends.
The Marlow Murder Club

Dr Lucien Blake left Ballarat as a young man. But now he finds himself returning to take over not only his dead father's medical practice, but also his on-call role as the town's police surgeon, only to find change is afoot, nothing is sacred, and no one is safe.
The Doctor Blake Mysteries

Sherlock Holmes faces a sinister case risking friends' lives. American Amelia joins, seeking her father after her mother's murder. Despite differences, they solve a conspiracy and her mother's case.
Sherlock & Daughter

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".
Barnaby Jones

A television anthology series hosted by Alfred Hitchcock featuring dramas, thrillers, and mysteries.
Alfred Hitchcock Presents

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.
Baretta

Set in a dystopian America ruled by a totalitarian political party, the series follows several seemingly unrelated characters living in a small city. Tying them all together is a mysterious savior who’s impeccably equipped for everything the night throws at them. As the clock winds down with their fates hanging in the balance, each character is forced to reckon with their pasts as they discover how far they will go to survive the night.
The Purge

A one-hour mystery full of twists and turns that follows Danny Desai, a charismatic 16-year-old with a troubled past who returns to his hometown after spending five years in juvenile detention. Immediately branded an outcast, Danny attempts to reconnect with his two childhood best friends, Jo and Lacey. But when a fellow student is found dead in her home, Danny instantly becomes the prime suspect and town spirals into a frenzy of suspicion and mystery. Jo and Lacey must decide if their childhood friend is unforgivable, or if he's really a victim being persecuted for his own twisted secrets.
Twisted

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

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.
77 Sunset Strip

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.
Spenser: For Hire

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.
Agatha Christie's Poirot

When Lucy Albright and Stephen DeMarco meet at college, they are at that formative age when seemingly mundane choices lead the way to irrevocable consequences. They quickly fall into an addictive entanglement that will permanently alter not only their lives, but the lives of everyone around them.
Tell Me Lies

Above Suspicion is a British crime drama programme starring Kelly Reilly as Anna Travis, a rookie detective determined to prove herself in the male-dominated police department by solving a trail of gruesome murders left by an unknown serial killer. Each series is based on a novel by Lynda La Plante: Above Suspicion (2009), The Red Dahlia (2010), Deadly Intent (2011), and Silent Scream (2012).
Above Suspicion

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.
Missing You

How do you solve a murder in a post-fact world? Especially when sailing the Mediterranean on an ocean liner filled with the wealthy and powerful. Everyone on board is hiding something… but is one of them a killer? That’s what the world’s once greatest detective, Rufus Cotesworth, and his protégée, Imogene, aim to discover.
Death and Other Details

When Frank and Joe Hardy arrive in Bridgeport, they set out to uncover the truth behind the recent tragedy that has changed their lives. In doing so, they stumble upon something much more sinister - something only the Hardy Boys can stop.
The Hardy Boys

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.
Agatha Christie's Marple

This anthology series brings to life Aaron Mahnke's titular podcast and uncovers the real-life events that spawn our darkest nightmares. Blending reenactments, animation, archive and narration, Lore reveals how our horror legends – such as vampires, werewolves and body snatchers – are rooted in truth.
Lore

Emily Lane is a good-natured Christmas shop owner with a secret past. When local murders begin to pop up in Fletcher’s Grove, Emily can’t help but to use her unique talents from her past life to help solve murders that affect people in her new life. She crosses paths with Detective Sam Wilner who she starts to make a connection with, until he comes to learn there is more to Emily than meets the eye.