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.
Lost

2004

Lost

2004
7.9
Stripped of everything, the survivors of a horrific plane crash must work together to stay alive. But the island holds many secrets.
Death in Paradise

2011

Death in Paradise

2011
7.5
A brilliant but idiosyncratic British detective and his resourceful local team solve baffling murder mysteries on the fictional Caribbean island of Saint-Marie.
The Bridge

2011

The Bridge

2011
8.1
When a body is found on the bridge between Denmark and Sweden, right on the border, Danish inspector Martin Rohde and Swedish Saga Norén have to share jurisdiction and work together to find the killer.
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.
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.
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
7.6
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.
Down Cemetery Road

2025

Down Cemetery Road

2025
5.8
When a child goes missing in the aftermath of a house explosion, a concerned neighbor teams up with a private investigator to find them. As secrets unravel and a military conspiracy emerges, all hell is unleashed on South Oxford's sleepy suburbs.
Sherlock

2010

Sherlock

2010
8.5
A modern update finds the famous sleuth and his doctor partner solving crime in 21st century London.
Foyle's War

2002

Foyle's War

2002
7.9
As WW2 rages around the world, DCS Foyle fights his own war on the home-front as he investigates crimes on the south coast of England. Foyle's War opens in southern England in the year 1940. Later series sees the retired detective working as an MI5 agent operating in the aftermath of the war.
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.
Detective Conan

1996

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.
Ancient Aliens

2010

Ancient Aliens

2010
7
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.
Veronica Mars

2004

Veronica Mars

2004
7.8
In the fictional town of Neptune, California, student Veronica Mars progresses from high school to college while moonlighting as a private investigator under the tutelage of her detective father.
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.
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?
Father Matteo

2000

Father Matteo

2000
6.3
Don Matteo is a thoroughly ordinary Catholic priest with an extraordinary ability to read people and solve crimes. He’s a parish priest who never met an unjustly accused person he didn’t want to help.