The Guardian is the seventh novel by the American writer Nicholas Sparks.
The book is about a Great Dane named Singer who is the pet of a widow named Julie who is trying to find a new life partner. Among those she considers are Mike, an old friend of hers, and Richard, a successful manager.
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Themes
The novel deals with the themes of obsessive love, as it attempts to show the inner world of a highly intelligent murderer living with no ethics at all.[2]