Murphy's Law seems to apply to the premise behind this novel. After a well-earned vacation touring the U.S. Southwest and the wonders of LA and San Francisco, DI Banks finds, upon his return to Eastvale, that an old friend has died after police tasered him, Banks' daughter is missing, and everything is in an uncontrolled mess.
It starts when a former neighbor of Banks discovers a gun which had been hidden by her daughter in her bedroom when visiting her parents. The mother visits the police station hoping to discuss the situation with Banks who, unfortunately, is still away. When the police raid the house, the woman's husband dies of a heart attack after the aforementioned taser incident; Banks' daughter, Tracy, infatuated with man who owned the gun (the 'bad boy' of the title) warns him of the police inquiries and hides him in her father's cottage. And from that point on, as Banks returns, everything goes downhill.
The chase begins with Tracy's status changing from willing lover to hostage, and Banks and the rest of the police force struggling with the lack of clues as to where the fugitive and his captive are. As usual, Banks doesn't always play by the rules. But then, neither does the bad boy. Another well-written and off-beat story in the series, and highly recommended.