Hidden gems
Underrated mystery shows
Great mystery series that flew under the radar — high ratings, smaller audience, ranked so the best-kept secrets come first.

Gravity Falls

Ripper Street

The Alfred Hitchcock Hour

Over the Garden Wall

Mystery Island

See No Evil

Dragnet

Gortimer Gibbon's Life on Normal Street

Messiah

Beyond Belief: Fact or Fiction

Modern Marvels

White Christmas

God's Gift: 14 Days

America's Book of Secrets

In Search of.....

Hill Street Blues

El Internado

The Booth at the End

The Prisoner

Prime Suspect

The Bletchley Circle

Astrid et Raphaëlle

Moonlighting

Janet King

Jesse Stone

Cannon

Forbrydelsen

Ancient Discoveries

The Hardy Boys/Nancy Drew Mysteries

Zen

XIII: The Conspiracy

Sapphire and Steel

Lost Treasures of Egypt

Secrets of the Lost

Through the Wormhole

A Haunting

Ófærð

Psychoville

Jack Taylor

Friendly Rivalry
Underrated shows by genre
Good to know
What makes a TV show underrated?
These are series rated 7.8 or higher by viewers but parked well outside the most-watched tier — genuinely good mystery shows that never got the audience they deserved.
Are these mystery shows actually worth watching?
Every title here clears a 7.8+ rating, so the score is real — just under the radar. Top of the list: Gravity Falls, Ripper Street, The Alfred Hitchcock Hour.
Where can I stream these hidden gems?
Every series links to its page with live streaming availability for your country.