U.S. Marshal Conrad Burke has been in love with Marilyn Langworthy since they were children. Now, the Big Easy gambler has gone undercover to find the gangster who killed his partner. But vengeance is replaced by the need to protect Marilyn and her unborn child when the gangster threatens to launch a rogue virus over the entire Denver area. COVERT COWBOY (3) by Harper Allen has little real action and a loosely plotted story. Although the heroine wavers between angsty and ineffective, the hero is as sexy as sin, with a special New Orleans flavor that makes the read worthwhile.