Tierney, Ronald. Peter Strand mystery

Peter Strand is half Chinese and half Cherokee and was adopted by an elderly white couple from Phoenix. Now he's a forensic accountant in San Francisco, where he's struggling with his identity. When his employer asks him to investigate a San Francisco-based nonprofit organization, Strand meets a cast of quirky characters who all seem to be hiding a secret. Peter soon finds evidence of a probable fraud, but when fraud leads to murder, he's drawn deeper into a murky mystery. The Black Tortoise is the second book in the Peter Strand Mystery series

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