The Best Suspense Movies and TV Shows on Plex

What it's about: The true story of the investigation of the "Zodiac Killer", a serial killer who terrified the San Francisco Bay Area, taunting police with his ciphers and letters. The case becomes an obsession for three men as their lives and careers are built and destroyed by the endless trail of clues.

Where to Watch: Available to watch free online (Plex, PopcornFlix & Crackle), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: A musician witnesses the murder of a famous psychic, and then teams up with a fiesty reporter to find the killer while evading attempts on their lives by the unseen killer bent on keeping a dark secret buried.

Where to Watch: Available to watch free online (Plex, Vudu & PopcornFlix), stream on a popular subscription service (Prime Video, Shudder, Hoopla & 1 other) & rent or buy from $1.99 on 3 services (iTunes, Google Play & Prime Video).

What it's about: A group of strangers find themselves trapped in a maze-like prison. It soon becomes clear that each of them possesses the peculiar skills necessary to escape, if they don't wind up dead first.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a subscription service (Hoopla) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: While holidaying in the French Alps, a Swedish family deals with acts of cowardliness as an avalanche breaks out.

Where to Watch: Available to watch free online (Tubi, Plex & Vudu), stream on a popular subscription service (Hulu, Hoopla, Kanopy & 1 other) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: In small-town Texas, affable and popular mortician Bernie Tiede strikes up a friendship with Marjorie Nugent, a wealthy widow well known for her sour attitude. When she becomes controlling and abusive, Bernie goes to great lengths to remove himself from her grasp.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Peacock & 5 others), stream on a subscription service (Kanopy) & rent or buy from $2.99 on 3 services (iTunes, Google Play & Microsoft).

What it's about: When straight arrow FBI agent Roy Clayton heads up the investigation into a dangerous international conspiracy, all clues seem to lead back to former U.S. Special Operations officer, Samir Horn.

Where to Watch: Available to watch free online (Tubi, Plex & Crackle) & rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Paul Aufiero, a 35-year-old parking-garage attendant from Staten Island, is the self-described "world's biggest New York Giants fan". One night, Paul and his best friend Sal spot Giants star linebacker Quantrell Bishop at a gas station and decide to follow him. At a strip club Paul cautiously decides to approach him but the chance encounter brings Paul's world crashing down around him.

Where to Watch: Available to watch free online (Tubi, Peacock, Plex & 4 others), stream on a popular subscription service (Prime Video, Hoopla & Kanopy) & rent or buy from $2.99 on 2 services (iTunes & Microsoft).

What it's about: Masters of Horror is an informal social group of international film writers and directors specializing in horror movies and an American television series created by director Mick Garris for the Showtime cable network.

Where to Watch: 26 episodes (100%) are available to watch free online (Tubi, Plex & IMDb TV). 26 episodes (100%) are available to stream on a subscription service (Hoopla). 26 episodes (100%) are available to rent or buy from $1.99 on 4 services (iTunes, Prime Video & 2 others).

What it's about: During a handover to the head of counter-terrorism of MI5, Harry Pearce, a terrorist escapes custody. When Harry disappears soon after, his protégé is tasked with finding out what happened as an impending attack on London looms, and eventually uncovers a deadly conspiracy.

Where to Watch: Available to watch free online (Plex) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Covert operative Tom Keen joins forces with Susan "Scottie" Hargrave, the brilliant and cunning chief of a covert mercenary organization that solves problems that are too dangerous for the government.

Where to Watch: 8 episodes (100%) are available to watch free online (Plex & Crackle). 8 episodes (100%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: A fashion photographer is traveling to meet his sister at Eden Parish. Once there, his friends begin to film interviews with the Eden Parish inhabitants, all of whom speak of the commune in glowing terms. However, they soon discover that there is a sinister edge to the commune that belies the seemingly peaceful setting.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 2 others), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: Nerdy Walter Paisley (Dick Miller), a maladroit busboy at a beatnik café who doesn't fit in with the cool scene around him, attempts to woo his beautiful co-worker, Carla (Barboura Morris), by making a bust of her. When his klutziness results in the death of his landlady's cat, he panics and hides its body under a layer of plaster. But when Carla and her friends enthuse over the resulting artwork, Walter decides to create some bigger and more elaborate pieces using the same artistic process.

Where to Watch: Available to watch free online (Tubi & Plex), stream on a subscription service (Epix, Hoopla & Kanopy), stream on a popular TV everywhere service (Epix) & rent or buy from $3.99 on 2 services (iTunes & Prime Video).

What it's about: Futuristic action about a man who meets a clone of himself and stumbles into a grand conspiracy about clones taking over the world.

Where to Watch: Available to watch free online (Plex & Crackle) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: A psychic doctor, John Clancy, works with an FBI special agent in search of a serial killer.

Where to Watch: Available to watch free online (Tubi, PlutoTV & Plex) & rent or buy from $3.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: 20 men are chosen to participate in the roles of guards and prisoners in a psychological study that ultimately spirals out of control.

Where to Watch: Available to watch free online (Plex & Crackle) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: When her husband John has a heart attack while out in a rowboat on the lake, Louise Haloran throws his body overboard and later tells the family that he has left on an urgent business trip. Her main concern is that she can only inherit a part of the family fortune if her husband is alive. The Halorans are a strange family, still grieving over the death of the youngest daughter Kathleen who drowned in a pond when she was just a child. They hold an annual ceremony of remembrance every year on the anniversary of her death. This year however, someone is wielding an ax intent on murder.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 2 others), stream on a popular subscription service (Prime Video, Epix, Hoopla & 1 other), stream on a popular TV everywhere service (Epix) & rent or buy from $2.00 on 3 services (iTunes, Prime Video & Vudu).

What it's about: San Francisco police officer Frank Connor is in a frantic search for a compatible bone marrow donor for his gravely ill son. There's only one catch the potential donor is convicted multiple murderer Peter McCabe who sees a trip to the hospital as the perfect opportunity to get what he wants most: freedom. With McCabe's escape, the entire hospital becomes a battleground and Connor must pursue and, ironically, protect the deadly fugitive who is his son's only hope for survival.

Where to Watch: Available to watch free online (PlutoTV, Plex & Crackle) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: When two friends return from a girls weekend vacation in Mexico, they find themselves stranded at the airport. Trying to get home safely, they board an airport shuttle for the short trip. But once their feet cross the threshold of the shuttle, a night that had started like any other turns terrifying, and the ride home becomes a descent into darkness.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Kit, a troubled girl, is sent to the exclusive Blackwood boarding school, where she discovers that only four other female students have been admitted to learn the four pillars of knowledge under the ominous wing of the mysterious headmistress Madame Duret.

Where to Watch: Available to watch free online (Tubi, Plex & IMDb TV) & rent or buy from $3.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: A Texas Ranger investigates a series of unexplained deaths in a town called Helena.

Where to Watch: Available to watch free online (Tubi, PlutoTV & Plex), stream on a subscription service (Hoopla) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: The compound of an arms manufacturer turns into a zombie nightmare when its workers are given the wrong formula.

Where to Watch: Available to watch free online (Plex & Crackle) & rent or buy from $2.99 on 3 services (Prime Video, Microsoft & Vudu).

What it's about: An assassin forges an unlikely partnership with one of his targets: a woman seeking revenge for the murder of her family.

Where to Watch: Available to watch free online (Tubi & Plex) & rent or buy from $3.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Mystery writer Cornelia Van Gorder has rented a country house called "The Oaks", which not long ago was the scene of some murders committed by a strange and violent criminal known as "The Bat". Meanwhile, the house's owner, bank president John Fleming, has recently embezzled one million dollars in securities and has hidden the proceeds in the house, but is killed before he can retrieve it.

Where to Watch: Available to watch free online (Tubi, PlutoTV & Plex), stream on a popular subscription service (Prime Video & Epix), stream on a popular TV everywhere service (Epix) & rent or buy from $1.99 on 1 service (Prime Video).

What it's about: After the mysterious death of scientist, Dr. Devin Villiers, Det. Frank Turner and his partner are assigned to protect Villiers' colleague, who revealed that a veteran soldier was subjected to an experiment with the objective of creating the ultimate national security weapon... an undetectable soldier. The experiment failed – with disastrous side effects.

Where to Watch: Available to watch free online (Plex & Crackle) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: A lady ringmaster milks the publicity from a string of murders.

Where to Watch: Available to watch free online (Plex & Crackle) & rent or buy from $2.99 on 4 services (iTunes, Google Play & 2 others).

What it's about: As Abraham Lincoln labors over the Gettysburg address, the importance of which he is fully aware, he learns that a menace from his past has returned, threatening to tear the already fractured nation to pieces. He must journey behind enemy lines to face an foe far more fearsome than the Confederate army: the walking dead.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Peacock & 2 others), stream on a subscription service (Hoopla) & rent or buy from $2.99 on 1 service (Microsoft).

What it's about: On the 100th anniversary of the original voyage, a modern luxury liner christened "Titanic 2," follows the path of its namesake. But when a tsunami hurls an ice berg into the new ship's path, the passengers and crew must fight to avoid a similar fate.

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a subscription service (ConTV) & rent or buy from $2.99 on 1 service (Microsoft).

What it's about: After a horror play's final performance, The Vampire roams the theater.

Where to Watch: Available to watch free online (Plex).

What it's about: A group of 20-somethings reunite at a New Year's Eve bash in middle-class suburbia. But when a near-death experience, a pregnancy, and the appearance of past rivals disrupts the night, how will each see their place in the world come new year's day?

Where to Watch: Available to watch free online (Tubi, PlutoTV, Plex & 1 other), stream on a subscription service (Hoopla & IndieFlix) & rent or buy from $2.99 on 4 services (iTunes, Google Play & 2 others).

What it's about: Set in the "not-too distant future", martial law has been declared in The City in leu of a looming earthquake. However, the earthquake is merely a ruse, a story fed to the public so the TWF (True World Forces) can capture an alien spotted over the city some few days earlier. A TWF agent runs into the alien (a *hottie* who can change her appearance, while always remaining - of course - a hottie), and the two go off and, um, compare their respective physiology (yeah, that's it).

Where to Watch: Available to watch free online (Plex).

What it's about: The only thing James wants is to remain away from Scotland. One day, however, he receives a fax, a printout of an unknown person's obituary. The next day, he is charged and arrested for the murder of this person.

Where to Watch: Available to watch free online (Plex & Vudu) & stream on a subscription service (Hoopla).

What it's about: Four young women tourists are hunted by ruthless woodsmen in the Florida Everglades.

Where to Watch: Available to watch free online (Plex).

What it's about: After surviving a near-death experience, a teenager discovers that she's become a channel for an evil spirit's entry into her life.

Where to Watch: Available to watch free online (Plex) & rent or buy from $2.99 on 4 services (iTunes, Google Play & 2 others).