The novel explores the themes of domination of one people over the others, the differences between races, emancipation of women, and the strength of the human spirit, strengthened in a struggle with the nature and society.

Hearts of Three is an adventure novel by Jack London. The novel was finished right before the writer's death and released in 1919-1920 in the New York Journal. The novel was written in cooperation with Charles Goddard.

Young descendant of the pirate Henry Morgan, who left him a rich heritage, wants to find the treasure of his ancestor. On the way, he meets his distant cousin, also Henry Morgan. Together, they will find dangerous adventures, unknown lands, and love.