4th of July (novel)

Police lieutenant Lindsay Boxer takes leave from the force after being sued for wrongful death after a recent shootout.

When Lindsay Boxer gets a lead on a recent murder of two teenagers, she responds to the call and joins Warren Jacobi on a stakeout of a Mercedes.

After a few days, the Half Moon Bay police chief tells her to mind her own business, but reconsiders when the next bodies are found.

Boxer is found not guilty, and instead of returning to work right away, goes back to Half Moon Bay, determined to solve the recent murders.

She gets out and follows more clues, discovering that pornography was the common denominator; all stricken families had been victims or producers of porno videos; then finally catches up with a guy who has been following her, a Keith Howard, who had sold her a car and who she liked a lot until then.