Popular Mystery TV Series on Free Services

Law & Order: Special Victims Unit

1999

Law & Order: Special Victims Unit

1999
7.9
In the criminal justice system, sexually-based offenses are considered especially heinous. In New York City, the dedicated detectives who investigate these vicious felonies are members of an elite squad known as the Special Victims Unit. These are their stories.
Dexter

2006

Dexter

2006
8.2
Dexter Morgan, a blood spatter pattern analyst for the Miami Metro Police also leads a secret life as a serial killer, hunting down criminals who have slipped through the cracks of justice.
Midsomer Murders

1997

Midsomer Murders

1997
7.5
The peacefulness of the Midsomer community is shattered by violent crimes, suspects are placed under suspicion, and it is up to a veteran DCI and his young sergeant to calmly and diligently eliminate the innocent and ruthlessly pursue the guilty.
Death in Paradise

2011

Death in Paradise

2011
7.4
A brilliant but idiosyncratic British detective and his resourceful local team solve baffling murder mysteries on the fictional Caribbean island of Saint-Marie.
The Institute

2025

The Institute

2025
8
When 14 year old genius Luke Ellis is kidnapped, he awakens at The Institute, a facility full of children who all got there the same way he did, and who are all possessed of unusual abilities. In a nearby town, haunted former police officer Tim Jamieson has come looking to start a new life, but the peace and quiet won’t last, as his story and Luke’s are destined to collide.
Case Closed (Detective Conan)

1996

Case Closed (Detective Conan)

1996
8
The son of a world famous mystery writer, Jimmy Kudo, has achieved his own notoriety by assisting the local police as a student detective. He has always been able to solve the most difficult of criminal cases using his wits and power of reason.
Murdoch Mysteries

2008

Murdoch Mysteries

2008
7.7
A Victorian-era Toronto detective uses then-cutting edge forensic techniques to solve crimes, with the assistance of a female coroner who is also struggling for recognition in the face of tradition, based on the books by Maureen Jennings.
Sherlock

2010

Sherlock

2010
8.5
A modern update finds the famous sleuth and his doctor partner solving crime in 21st century London.
High Potential

2024

High Potential

2024
8
Morgan is a single mom with an exceptional mind, whose unconventional knack for solving crimes leads to an unusual and unstoppable partnership with a by-the-book seasoned detective.
Revival

2025

Revival

2025
7.4
On one miraculous day in rural Wisconsin, the recently deceased suddenly rise from their graves. But this is no zombie story, as the 'revived' appear and act just like they once were. When local officer and single mother Dana Cypress is unexpectedly thrown into the center of a brutal murder mystery of her own, she's left to make sense of the chaos amidst a town gripped by fear and confusion where everyone, alive or undead, is a suspect.
Death Note

2006

Death Note

2006
8.6
Light Yagami is an ace student with great prospects—and he’s bored out of his mind. But all that changes when he finds the Death Note, a notebook dropped by a rogue Shinigami death god. Any human whose name is written in the notebook dies, and Light has vowed to use the power of the Death Note to rid the world of evil. But will Light succeed in his noble goal, or will the Death Note turn him into the very thing he fights against?
Ancient Aliens

2010

Ancient Aliens

2010
6.9
Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.
Agatha Christie's Marple

2004

Agatha Christie's Marple

2004
7.7
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.
The Loud House

2016

The Loud House

2016
7.8
Welcome to the Loud House, where life can get pretty crazy. One boy, TEN girls?! Lincoln Loud wouldn’t change it for the world!
Father Brown

2013

Father Brown

2013
7.5
Father Brown is based on G. K. Chesterton's detective stories about a Catholic priest who doubles as an amateur detective in order to try and solve mysteries.
21 Jump Street

1987

21 Jump Street

1987
7.2
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.
Earth: Final Conflict

1997

Earth: Final Conflict

1997
6.8
Years ago, the Taelons came to Earth, offering friendship and technology to humanity. But there are those who believe the Taelons have more sinister motives.
City Hunter

1987

City Hunter

1987
8
Ryo Saeba works the streets of Tokyo as the City Hunter. He's a "sweeper" and with his sidekick Kaori Makimura, he keeps the city clean. People hire the City Hunter to solve their dangerous problems, which he does with a Colt Python. When Ryo's not working on a case, he's working on getting the ladies, and Kaori must keep him in check with her trusty 10 kg hammer.
The Saint

1962

The Saint

1962
7.3
Simon Templar is The Saint, a handsome, sophisticated, debonair, modern-day Robin Hood who recovers ill-gotten wealth and redistributes it to those in need.
The Curse of Oak Island

2014

The Curse of Oak Island

2014
7.3
Follow brothers Marty and Rick Lagina through their effort to find the speculated - and as of yet undiscovered - buried treasure believed to have been concealed through extraordinary means on Oak Island.