Top Mystery Series of 2025 Online
Uncover the unknown with the best mystery series of 2025 online. From mind-bending plots to gripping whodunits, these shows keep you captivated with every clue and twist. Watch the top mystery series of 2025 online and immerse yourself in thrilling tales of suspense and intrigue.
Dalah: Death and the Flowers (2025)
- Se:1 Ep:6
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When her client dies on the eve of his wedding, a florist sets out to find the killer, unearthing high society's dark secrets while keeping her own.
Ameku Takao's Detective Karte (2025)
- Se:1 Ep:11
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Ten’ikai General Hospital’s Supervisory Department of Diagnostic Pathology handles cases other physicians deem too difficult to treat. It’s also where bizarre mysteries surface, from unexplained illnesses to strange murders even the police can’t solve. At the center of it all is Takao Ameku, a brilliant doctor determined to reveal the shocking truth behind these anomalies.
Hound's Hill (2025)
- Se:1 Ep:5
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Famous writer Mikolaj returns to hometown facing blackmail over a book about a past murder. His activist father opposes local corruption. Mikolaj's journalist wife investigates, uncovering dark secrets tied to the town's tragic hi...
The Åre Murders (2025)
- Se:1 Ep:5
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A Stockholm detective under internal investigation heads to a ski resort to unwind, until a young girl's disappearance compels her back to work.
Devil's Diner (2025)
- Se:1 Ep:6
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A mysterious chef operates in a remote location, preparing magical dishes that fulfill customers' greatest wishes, but if they're willing to pay the price.
Watson (2025)
- Se:1 Ep:3
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A year after the death of his friend and partner Sherlock Holmes, Dr. John Watson resumes his medical career at a clinic dedicated to the treatment of rare diseases. However, he soon finds that his old life is not done with him yet.
Buried Hearts (2025)
- Se:1 Ep:16
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A man hacks a secret political slush fund of 2 trillion won for survival. An elite figure kills him for the fund, only to find it empty, leading to chaos and betrayal. True motives behind the slush fund emerge, leaving everyone vu...
When No One Sees Us (2025)
- Se:1 Ep:8
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Set in Morón de la Frontera, follows Lucía Gutierrez, a sergeant in the Spanish Civil Guard who investigates weird incidents at the first Holy Week float processions as well as the inexplicable suicide of a neighbor there.
The Stolen Girl (2025)
- Se:1 Ep:5
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A mother-of-two whose world is turned upside down when she agrees to let her nine-year-old daughter have a sleepover at her new best friend's house.
Mobius (2025)
- Se:1 Ep:16
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A renowned detective who solves every case faces his toughest challenge when untraceable murders rock Hua'ao City. The killer vanishes without a trace, turning the city's shadows into potential threats.
Bet (2025)
- Se:1 Ep:10
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A transfer student from Japan disrupts a boarding school's power structure with her gambling skills, challenging the Student Council while pursuing revenge that could overturn the entire system.
Dept. Q (2025)
- Se:1 Ep:9
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Carl, a former top-rated detective who is wracked with guilt following an attack that left his partner paralyzed and another policeman dead. On his return to work, Carl is assigned to a cold case that will consume his life.
Countdown (2025)
- Se:1 Ep:13
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An LAPD officer joins a secret task force to investigate a suspicious murder, but uncovers a sinister plot that requires the team to unite and save millions in the city.
The Institute (2025)
- Se:1 Ep:8
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Luke Ellis whose parents are murdered. He wakes up at The Institute in a room that looks just like his own, except there's no window. Outside his door are other doors, behind which are other kids. who got there the same way Luke did.
Missing You (2025)
- Se:1 Ep:5
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Detective Kat Donovan's world unravels when she finds her estranged fiancé on a dating app. This leads Kat to reopen the unsolved mystery surrounding her father's murder.
The Assassin (2025)
- Se:1 Ep:6
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A retired assassin reunites with her estranged son, but her dangerous past catches up with them, forcing them to go on the run together while uncovering a dark conspiracy that threatens their relationship.
The Girlfriend (2025)
- Se:1 Ep:6
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Laura's idyllic life is shattered when her son's new girlfriend seems suspicious. Determined to protect him, Laura's actions spiral out of control, raising the question: Is she justifiably cautious or consumed by paranoia?
Wayward (2025)
- Se:1 Ep:8
- 2
A bucolic but sinister town explores the insidious intricacies of the troubled teen industry, and the eternal struggle of the next generation.
Queen Mantis (2025)
- Se:1 Ep:8
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A cop must work with his mother, the "Mantis" - a female serial killer who murdered 5 men decades ago - when copycat killings emerge. He's hated her his whole life.