Movies Like Day 21

If you liked Day 21 (2025), a thriller movie directed by Dashiell Meier, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Black Widow (1987)
★ 6.2/10Also thriller
Federal agent Alexandra Barnes believes that Catherine Petersen is a serial killer who marries rich men and then murders them for their money. But since Catherine is seemingly a master of disguise and has multiple…
2
Strange but True (2019)
★ 6/10Also thriller
A woman surprises the family of her deceased boyfriend by telling them she's pregnant with his child.
3
The Invisible (2007)
★ 6.4/10Also thriller
After an attack leaves him in limbo -- invisible to the living and also near death -- a teenager discovers the only person who might be able help him is his attacker.
4
The MacKintosh Man (1973)
★ 6.1/10Also thriller
A member of British Intelligence assumes a fictitious criminal identity and allows himself to be caught, imprisoned, and freed in order to infiltrate a spy organization and expose a traitor; only, someone finds him out…
5
Chief of Station (2024)
★ 6.3/10Also thriller
After learning that the death of his wife was not an accident, a former CIA Station Chief is forced back into the espionage underworld, teaming up with an adversary to unravel a conspiracy that challenges everything he…
6
Metropia (2009)
★ 6.1/10Also thriller
In the near future, oil reserves are nearly depleted and Europe is connected by series of underground tunnels. While navigating these tunnels, Roger hears voices, one in particular. Seeking a way to rid himself of the…
7
Maniac (1963)
★ 6.2/10Also thriller
When a stranger enters a quiet, country town and is seduced by a sensuous married woman he unwittingly finds himself at the centre of a storm of sexual guilt and murder.
8
Conflict (1945)
★ 6.7/10Also thriller
Unhappily married Richard Mason concocts a meticulous scheme to kill his shrewish wife so that he'll be free to marry her sister.
9
Pickup on South Street (1953)
★ 7.4/10Also thriller
In New York City, an insolent pickpocket, Skip McCoy, inadvertently sets off a chain of events when he targets ex-prostitute Candy and steals her wallet. Unaware that she has been making deliveries of highly classified…
10
Seeds of Yesterday (2015)
★ 6.4/10Also thriller
The Sheffield family reveal and go through some home truths as their middle child inherits the Foxworth mansion. The family's ghosts looming over, and more tragedies are in store as the curse lives on.
11
Mermaid Down (2019)
★ 6.4/10Also thriller
A mermaid is ripped from the ocean by a fishing crew only to be tortured and to have her tail cut off. A seemingly helpful stranger intervenes, but then locks her away in an institution for mentally disturbed young…
12
The Night Stalker (1972)
★ 6.9/10Also thriller
Wisecracking reporter Carl Kolchak investigates a string of murders in Las Vegas and suspects the culprit is a vampire. His editor thinks he's crazy and the police think he's a nuisance, so Kolchak takes matters into…
13
Peeping Tom (1960)
★ 7.4/10Also thriller
Loner Mark Lewis works at a film studio during the day and, at night, takes racy photographs of women. Also he's making a documentary on fear, which involves recording the reactions of victims as he murders them. He…
14
Madigan (1968)
★ 6.2/10Also thriller
NYPD detectives Bonaro and Madigan lose their guns to fugitive Barney Benesch. As compensation, they are given a weekend to bring Benesch to justice. While they follow various leads, Police Commissioner Russell goes…
15
Nightfall (1956)
★ 6.9/10Also thriller
An innocent man turns fugitive as he reconstructs events that implicate him for a murder and robbery he did not commit.
16
Silent Zone (2025)
★ 6/10Also thriller
In a zombie-ravaged world, a resourceful teen and her protector fight for survival, facing relentless dangers and testing the limits of hope and loyalty.
17
Cul-de-sac (1966)
★ 6.7/10Also thriller
On the run and in search of help, two wounded gangsters find refuge in the secluded castle of a feeble man and his wife; however, under the point of a gun, nothing is what it seems.
18
The Quiller Memorandum (1966)
★ 5.9/10Also thriller
After two British Secret Intelligence Service agents are murdered at the hands of a cryptic neo-Nazi group known as Phoenix, the suave agent Quiller is sent to Berlin to investigate.
19
Vertigo (1958)
★ 8.1/10Also thriller
A retired San Francisco detective suffering from acrophobia investigates the strange activities of an old friend's wife, all the while becoming dangerously obsessed with her.
20
Poison (2023)
★ 6.8/10Also thriller
When a poisonous snake slithers onto an Englishman's stomach in India, his associate and a doctor race to save him.