The Girl Who Knew Too Much_
"You have to be crazy or in love - to take on the Syndicate!"
A runaway truck containing the corpse of a slain gang leader rolls into a California nightclub owned by Johnny Cain, a hard bitten former free-lance adventurer. The gang threatens to kill Johnny, unless he solves the murder. The CIA also investigates - because it turns out that the slaying was part of a long-range Communist plan to take over the crime syndicate. Cain's search for clues leads him into a maze of beautiful girls, mysterious Oriental statues and murderous spies.
Starring
Adam West, Nancy Kwan, Robert Alda
Updated Feb 16, 2026
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Year context
The Girl Who Knew Too Much was released 57 years ago in 1969.
Overview
A runaway truck containing the corpse of a slain gang leader rolls into a California nightclub owned by Johnny Cain, a hard bitten former free-lance adventur...
The Girl Who Knew Too Much is a Crime, Drama film with a runtime of 1h 35m.
CAST (11)
Adam West
Johnny Cain
Nancy Kwan
Revel Drue
Robert Alda
Kenneth Allandice
Nehemiah Persoff
Lieutenant Crawford
BG
Buddy Greco
Lucky Jones
Patricia Smith
Tricia Grinaldi
David Brian
Had Dixon
Chick Chandler
Hunley Cobble
Lisa Todd
Sugar Sweet
Laurie Mitchell
Trudell
Biff Elliot
Archie
DETAILS
FREQUENTLY ASKED QUESTIONS
What is The Girl Who Knew Too Much about?
A runaway truck containing the corpse of a slain gang leader rolls into a California nightclub owned by Johnny Cain, a hard bitten former free-lance adventurer. The gang threatens to kill Johnny, unless he solves the murder. The CIA also investigates - because it turns out that the slaying was part of a long-range Communist plan to take over the crime syndicate. Cain's search for clues leads him into a maze of beautiful girls, mysterious Oriental statues and murderous spies.
How long is The Girl Who Knew Too Much?
The Girl Who Knew Too Much has a runtime of 95 minutes (1h 35m).
Who stars in The Girl Who Knew Too Much?
The cast of The Girl Who Knew Too Much includes Adam West, Nancy Kwan, Robert Alda, Nehemiah Persoff, Buddy Greco.
What is the rating of The Girl Who Knew Too Much?
The Girl Who Knew Too Much has a rating of 4.0 out of 10 based on 2 votes on TMDB.
GENRES (2)
Crime
Drama