The Unknown Quantity poster
Where to stream

The Unknown Quantity

8.0191950mNRMovieDrama

Mary Boyne, who made shirts at four dollars a week, had no place for love in her life - only despair and hate for the son of the man who had plunged her family into deepest distress. Peter Kenwitz loved Mary, but because he was a…

DirectorThomas R. Mills
WritersO. Henry·G. Marion Burton

Where to watch

Not streaming yet
Check back soon

The Unknown Quantity was released on April 14, 1919 but we couldn't find it on any streaming service yet. Rights can change — try again later.

Get the app to be notified

Cast · Directed by Thomas R. Mills

CGCorinne Griffith
Corinne Griffith
Mary Boyne
HGHuntley Gordon
Huntley Gordon
Dan Kinsolving
HDHarry Davenport
Harry Davenport
Septimus Kinsolving
JMJack McLean
Jack McLean
Sammy Boyne
JR
Jack Ridgeway
Thomas Boyne
FB
F.R. Buckley
Peter Kenwitz

More from Corinne Griffith · Lead actress

Miss Ambition
Miss Ambition
1918
The Menace
The Menace
1918
Island Wives
Island Wives
1922 · 8.0
Lily Christine
Lily Christine
1932 · 10.0
Infatuation
Infatuation
1925 · 10.0
Thin Ice
Thin Ice
1919 · 7.0
The Climbers
The Climbers
1919 · 9.0
Moral Fibre
Moral Fibre
1921 · 10.0
Divorce Coupons
Divorce Coupons
1922 · 8.0
Three Hours
Three Hours
1927 · 7.0
See all fromCorinne Griffith

More from Huntley Gordon · Co-star actor

Stage Door
Stage Door
1937 · 7.1
Bombay Mail
Bombay Mail
1934 · 7.5
Pleasure Mad
Pleasure Mad
1923 · 8.0
Wine
Wine
1924 · 10.0
What Fools Men Are
What Fools Men Are
1922 · 7.0
Society Snobs
Society Snobs
1921 · 10.0
My Wife and I
My Wife and I
1925 · 8.0
Merrily Yours
Merrily Yours
1933 · 5.7
Chastity
Chastity
1923 · 9.0
Men
Men
1918 · 8.0
See all fromHuntley Gordon

More from Thomas R. Mills · Director

Thin Ice
Thin Ice
1919 · 7.0
A Girl at Bay
A Girl at Bay
1919
The Third Ingredient
The Third Ingredient
1917 · 7.0
The Invisible Divorce
The Invisible Divorce
1920 · 10.0
The Seal of Silence
The Seal of Silence
1918
The Venturers
The Venturers
1917 · 8.0
The Girl in His House
The Girl in His House
1918 · 10.0
See all fromThomas R. Mills

More like this

Little Lord Fauntleroy
Little Lord Fauntleroy
1980 · 7.3
Won't Back Down
Won't Back Down
2012 · 6.1
Eleanor the Great
Eleanor the Great
2025 · 6.9
Flicka
Flicka
2006 · 6.9
Here
Here
2024 · 6.5
Extraordinary Measures
Extraordinary Measures
2010 · 6.3
The Keys of the Kingdom
The Keys of the Kingdom
1944 · 7.1
Madame X
Madame X
1966 · 6.4
Hungry Hearts
Hungry Hearts
2015 · 6.5
Blue Chips
Blue Chips
1994 · 6.1
Undercurrent
Undercurrent
1946 · 5.9
Where the Red Fern Grows
Where the Red Fern Grows
1974 · 6.9

The Unknown Quantity — streaming FAQ

Which OTT platform streams The Unknown Quantity?

The Unknown Quantity isn't streaming anywhere in India yet.

Is The Unknown Quantity on Netflix?

No, The Unknown Quantity is not on Netflix in India as of September 2026.

Is The Unknown Quantity on Amazon Prime Video?

No, The Unknown Quantity isn't on Amazon Prime Video in India right now.

Where can I watch The Unknown Quantity for free?

The Unknown Quantity isn't streaming in India yet, so there's no way to watch it free at the moment.

What is the OTT release date for The Unknown Quantity?

The Unknown Quantity hasn't started streaming in India yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around June 2, 1919. This is a prediction, not a confirmed date.