What is the theme in L.A. Requiem by Robert Crais?

The power of love is a major determining force in this novel. Cole and Pike investigate Karen's death to satisfy the hunger of her loving father's grief. The only reason that Cole agrees to work the case for free is that he sees Frank Garcia's genuine love for his daughter and heartbreak at her loss. That love forces Cole to stay on an investigation where he is not wanted. Love also plays a significant role in Cole's interpersonal relationships in the novel. Cole's fierce love for Lucy is the only thing that prevents him from beginning a relationship with Samantha Dolan. On the other hand, his sudden love for Dolan makes him doubt the veracity of his love for Lucy.

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