Teenagers Libby and Kit innocently spend an evening doing random crank calls. These calls lead to murderous consequences.

Director:

Writers:

(screenplay) (as William McGivern), (novel)
Reviews
Learn more

People who liked this also liked... 

Strait-Jacket (1964)
Drama | Horror | Thriller
    1 2 3 4 5 6 7 8 9 10 6.8/10 X  

After a 20 year stay at an asylum for a double murder, a mother returns to her estranged daughter where suspicions arise about her behavior.

Director: William Castle
Stars: Joan Crawford, Diane Baker, Leif Erickson
Horror | Mystery | Thriller
    1 2 3 4 5 6 7 8 9 10 6.5/10 X  

A woman is haunted by recurring nightmares, which seem to be instigated by her late husband who supposedly was killed in a fire.

Director: William Castle
Stars: Robert Taylor, Barbara Stanwyck, Judi Meredith
Homicidal (1961)
Horror | Mystery | Thriller
    1 2 3 4 5 6 7 8 9 10 6.9/10 X  

The brutal stabbing murder of a justice-of-the-peace sparks an investigation of dark family secrets in a sleepy small town in Southern California.

Director: William Castle
Stars: Glenn Corbett, Patricia Breslin, Eugenie Leontovich
Autumn Leaves (1956)
Drama
    1 2 3 4 5 6 7 8 9 10 6.7/10 X  

Millicent Wetherby is a middle-aged woman whose life is devoid of love and affection. Millicent's solitary existence changes when she encounters Burt Hansen a charismatic younger man. As ... See full summary »

Director: Robert Aldrich
Stars: Joan Crawford, Cliff Robertson, Vera Miles
Queen Bee (1955)
Drama | Romance
    1 2 3 4 5 6 7 8 9 10 6.6/10 X  

A young woman arrives at the home of her socialite cousin, and soon finds herself sucked into the woman's complex web of deceit.

Director: Ranald MacDougall
Stars: Joan Crawford, Barry Sullivan, Betsy Palmer
Drama | Horror | Mystery
    1 2 3 4 5 6 7 8 9 10 6.7/10 X  

A search for a winning lottery ticket in his dead father's grave causes Sardonicus' face to freeze in a horrible grimace, until he forces a doctor to treat his affliction--with even more ... See full summary »

Director: William Castle
Stars: Ronald Lewis, Audrey Dalton, Guy Rolfe
Berserk (1967)
Horror | Mystery | Thriller
    1 2 3 4 5 6 7 8 9 10 4.9/10 X  

Monica Rivers is the owner and ringmaster of a traveling circus, and she'll stop at nothing to draw bigger audiences. When a series of mysterious murders begins to occur and some of her ... See full summary »

Director: Jim O'Connolly
Stars: Joan Crawford, Ty Hardin, Diana Dors
Zotz! (1962)
Comedy | Fantasy
    1 2 3 4 5 6 7 8 9 10 6/10 X  

Jonathan Jones, a professor of ancient languages, comes into possession of an ancient coin. He translates its inscription, which gives him three powers: to inflict pain, slow down time or ... See full summary »

Director: William Castle
Stars: Tom Poston, Julia Meade, Jim Backus
Trog (1970)
Certificate: GP Horror
    1 2 3 4 5 6 7 8 9 10 3.5/10 X  

A sympathetic anthropologist uses drugs and surgery to try to communicate with a primitive troglodyte who is found living in a local cave.

Director: Freddie Francis
Stars: Joan Crawford, Michael Gough, Bernard Kay
Harriet Craig (1950)
Drama
    1 2 3 4 5 6 7 8 9 10 7/10 X  

Domineering Harriet Craig holds more regard for her home and its possessions than she does for any person in her life. Among those she treats like household objects are her kind husband ... See full summary »

Director: Vincent Sherman
Stars: Joan Crawford, Wendell Corey, Lucile Watson
Crime | Drama | Mystery
    1 2 3 4 5 6 7 8 9 10 6/10 X  

Moving into a beach house involves Lynn Markham in mystery, danger, and romance with a beach boy of dubious motives.

Director: Joseph Pevney
Stars: Joan Crawford, Jeff Chandler, Jan Sterling
I Saw What You Did (TV Movie 1988)
Drama | Horror | Thriller
    1 2 3 4 5 6 7 8 9 10 5.9/10 X  

Two teens, Lisa and Kim, are playing games making prank calls on the phone. But when they call Adrian Lancer who has some mental problems, and say "I saw what you did", they ignite a human ... See full summary »

Director: Fred Walton
Stars: Shawnee Smith, Tammy Lauren, Candace Cameron Bure
Edit

Cast

Cast overview, first billed only:
...
Amy Nelson
...
Steve Marak
...
Dave Mannering
Sara Lane ...
Kit Austin (as Sarah Lane)
Andi Garrett ...
Libby Mannering
Sharyl Locke ...
Tess Mannering
...
Ellie Mannering
John Archer ...
John Austin
John Crawford ...
State Trooper
Joyce Meadows ...
Judith Marak
...
Gerald Nyes
Douglas Evans ...
Barbara Wilkin ...
Mary Ward
Glen Vernon ...
John Adams
Sara Anderson ...
Jill Adams
Edit

Storyline

When two teenagers make prank phone calls to strangers, they become the target for terror when they whisper "I Saw What You Did, And I Know Who You Are!" to psychopath Steve Marek who has just murdered his wife. But somebody else knows of the terrible crime that was committed that night, the killer's desperately amorous neighbor Amy Nelson. Written by Joan Crawford & William Castle

Plot Summary | Plot Synopsis

Taglines:

Don't laugh little girl, better run for your life. The man you were talking to, has just murdered his wife! See more »

Genres:

Horror | Thriller

Certificate:

See all certifications »

Parents Guide:

 »
Edit

Details

Country:

Language:

Release Date:

21 July 1965 (USA)  »

Also Known As:

I Saw What You Did and I Know Who You Are!  »

Company Credits

Show detailed on  »

Technical Specs

Runtime:

Sound Mix:

(Westrex Recording System)

Aspect Ratio:

1.85 : 1
See  »
Edit

Did You Know?

Trivia

During its original theatrical release some theaters installed seat-belts so you couldn't be "shocked out of your seat". See more »

Goofs

When Kit and her father hear car radio news report of murder while making late night drive back from Libby's house, landscape appears to be in full daylight even though earlier night scenes don't suggest there is any significant moonlight. See more »

Quotes

Libby: I saw what you did, and I know who you are.
See more »

Crazy Credits

Closing credit (over picture of phone lines): "The End of the Line." See more »

Connections

Featured in American Grindhouse (2010) See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

 
Very suspenseful
11 May 2004 | by (Wilkesboro, NC) – See all my reviews

Here's the plot: A teenage girl with her friend and younger sister(Andi Garett, Sara Lane, and Sharyl Locke) are left home alone one night by their parents, after the babysitter cancels. To amuse themselves, the decide to make prank phone calls(this was in 1965, long before caller ID or tracing existed) one phrase they use quite often to the people they call is "I saw what you did...and I know who you are." What they don't know is that one of the people they call, Steve Marek (John Ireland) takes them seriously, having just stabbed his wife to death!

This film was really scary or at least very suspenseful, considering the time period. I was pretty much on the edge of my seat, waiting to see what would happen next. There are a few things that bring this film down, chief among them most inappropriate score I think I've ever heard. It was just corny. The acting in the initial scene between the two teen girls is bad, but gets better. This film comes highly recommended. 7/10


5 of 6 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
Justifiable homicide Lincbond442
The DVD has been out-of-print for too long. helen_shivers
Steve Marek's wife??? moosepoop70
Where was the Pepsi??? OKCRay
does she think he had sex with the girls? ClassicSiren
When I was little... Garnet-McGee
Discuss I Saw What You Did (1965) on the IMDb message boards »

Contribute to This Page

Create a character page for:
?