He Knows You're Alone_
"Every girl is frightened the night before her wedding. But this time...there's good reason!"
A reluctant bride-to-be is stalked by a serial killer who only kills brides and the people around them. While her friends get whacked one by one, a hard-boiled renegade cop whose bride had been killed years before tries to hunt the killer down before it is too late.
Starring
Don Scardino, Caitlin O'Heaney, Elizabeth Kemp
Box Office
$4.9M
Updated Feb 16, 2026
WHERE TO WATCH
No streaming data available yet.
Check availabilityDROPTHE_ GOSSIP
Box office
He Knows You're Alone earned $4.9M worldwide on a $300K budget — a 1,533% return on investment.
Year context
He Knows You're Alone was released 46 years ago in 1980.
He Knows You're Alone is a Horror film with a runtime of 1h 34m.
CAST (20)
Don Scardino
Marvin
Caitlin O'Heaney
Amy Jensen
Elizabeth Kemp
Nancy
TR
Tom Rolfing
Ray Carlton
Lewis Arlt
Det. Len Gamble
Patsy Pease
Joyce
James Rebhorn
Prof. Carl Mason
Tom Hanks
Elliot
Dana Barron
Diana
Joseph Leon
Ralph the Tailor
Paul Gleason
Det. Frank Daley
JC
James Carroll
Phil
Brian Byers
Bernie
CH
Curt Hostetter
Tommy
Robin Lamont
Ruthie
RT
Robin Tilghman
Marie
PG
Peter Gumeny
Det. Thompson
JB
John Bottoms
Father McKenna
DN
Debbie Novak
Girl in Car
Russell Todd
Boy in Car
BOX OFFICE
$300K
Budget
$4.9M
Revenue
+1533%
ROI
MASSIVE HIT
Verdict
DETAILS
Release
Status
Released
Runtime
94 min (1h 34m)
Country
Rating
5.0/10 (75 votes)
Budget
$300,000
Box Office
$4,900,000
Profit
+$4,600,000
FREQUENTLY ASKED QUESTIONS
What is He Knows You're Alone about?
A reluctant bride-to-be is stalked by a serial killer who only kills brides and the people around them. While her friends get whacked one by one, a hard-boiled renegade cop whose bride had been killed years before tries to hunt the killer down before it is too late.
How long is He Knows You're Alone?
He Knows You're Alone has a runtime of 94 minutes (1h 34m).
Who stars in He Knows You're Alone?
The cast of He Knows You're Alone includes Don Scardino, Caitlin O'Heaney, Elizabeth Kemp, Tom Rolfing, Lewis Arlt.
How much did He Knows You're Alone make at the box office?
He Knows You're Alone earned $4,900,000 worldwide at the box office. The production budget was $300,000.
What is the rating of He Knows You're Alone?
He Knows You're Alone has a rating of 5.0 out of 10 based on 75 votes on TMDB.
GENRES (1)
Horror