Stella Maris is a 1918 American silent drama film directed by Marshall Neilan, written by Frances Marion and based on William John Locke's 1913 novel of the same name.

The film stars Mary Pickford in dual roles as the title character and an orphan servant.

However during one visit at the Blount residence, Unity catches the family dog taking a silk jacket belonging to Gladys and chases after him to get it back and avoid trouble.

In order to make John fall in love with her, Unity starts to educate herself with Aunt Gladys' help.

For the first time, Unity finally feels like she belongs in a loving home and Aunt Gladys is the closest she has to having a caring mother.

Feeling betrayed, she tells John to leave her alone and refuses to talk to her family upon seeing how much sadness and pain are in the world.

Unity hears Aunt Gladys' concerns about John's inability to be free to love Stella while Louise lives.

As an act of kindness to them, she decides to help get rid of Louise for good, sneaks inside a room and gets a gun.

At her relatives' home, Stella reconciles with them and comes to the realization that while there will be sadness and pain in the world, there are also joy and happiness that follows it.

At Aunt Gladys' home, Unity gets her revenge and shoots Louise in her bed before committing suicide by killing herself to make it look like it's a revenge-murder.

Aunt Gladys convinces Stella's wealthy relatives to give John another chance and not think badly about Unity, explaining she helped free him from his abusive wife.