San Antonian RICK RIORDAN returns the Alamo City’s most offbeat private investigator to action in MISSION ROAD (Bantam), the most fully realized of his six Tres Navarre novels to date. The road in question was the scene of multiple unsolved sexual assaults and homicides. When the cases, cold for at least eighteen years, land on the desk of SAPD detective Ana Deleon, she winds up dead, and her husband turns to Navarre for help proving he didn’t kill her. Mission Road is well worth the price of admission just for its array of bad cops, good crooks, and swell characters (like Sam Barrera, an ex–FBI agent whose Alzheimer’s doesn’t deter him from fighting crime with his water pistol). Throw in Riordan’s clever twist at the end, and you’re getting top value for your entertainment dollar.