Quote:In House Witness, the twelfth novel in the Joe DeMarco series, Mike Lawson puts his likable protagonist on the trail of a different kind of fixer-one whose job is to influence, and sometimes disappear, witnesses in seemingly airtight criminal cases. Minority Leader of the House and DeMarco's long-time employer John Mahoney has kept more than one secret from his wife over the years, but none so explosive as this: He has a son, and that son has just been shot dead in a bar in Manhattan. Mahoney immediately dispatches DeMarco to New York to assist prosecutor Justine Porter, but with five bystanders willing to testify against the killer-rich-boy Toby Rosenthal-the case seems like a slam-dunk. That is, until Porter begins to suspect that someone is interfering with those witnesses, and that this may be connected to a pattern of cases across the country. Is there someone who is getting witnesses out of the way when the fate of a wealthy defendant is on the...