Marla Bernstein is a pretty, dark-haired teenager? who also happens to be the ward of Ben Morningstar-a semi-retired mobster who prefers to keep family business out of the newspapers. When Marla suddenly disappears, the gang boss is forced to call in private eve Amos Walker, who quickly learns his new employer doesn't take "no" for an answer when he offers a job opportunity.

Unfortunately, the only clue to Marla's whereabouts is a pornographic photograph that clearly proves that she's become part of a world that disgusts even her criminal guardian. .

The photo, in turn leads Walker into the seedy world of Detroit's porn shops and blue movies, where Marla's trail becomes even murkier?.and increasingly more dangerous to follow. .

As first cases go, Walker could have certainly asked for one less challenging?...

You can share your thoughts about Loren D. Estleman's Motor City Blue in the new ibooks virtual readers' group at www.ibooksinc.com.