[2] As described in a film magazine review,[3] Isabella is a European siren who plays with men for her amusement.

She is scorned by Gerald Rexford, an Englishman, and in revenge she brings him to her feet, but loses her heart to him.

Gerald learns of her sacrifice and returns to her, arriving just after she has supposedly drunk poison.

Her watchful attendant, however, had emptied the bottle of poison and replaced it with a harmless liquid.

Prints of The Heart of a Siren are held by the UCLA Film and Television Archive,[1] George Eastman Museum Motion Picture Collection, and Pacific Film Archive.