When Alice Bright (Binnie Hale) remarks that she had just been performing in a play, Sam Higgins (Gordon Harker) retorts, "East Lynne?" This is a reference to the oft produced play and movie of Mrs. Henry Wood's novel of the same name. "East Lynne" was enjoyed for its mad plot and frequently incomprehensible dialogue.
The inscription in the wall of the lighthouse is the opening line of Psalm 127: "Except the Lord build the house, they labour in vain that build it."
The film "Back Room Boy" would have a similar plot to the above production.