Cat & Mouse

This is an okay book written by James Patterson. Two psychotic killers have chosen Detective Cross as their only worthy opponent in a deadly game of cat and mouse. One of them, Gary Soneji, bears an old grudge against Alex and lives for revenge. The other, Mr. Smith, is a genius whose hideous crimes have been confined to Europe until a curious twist of fate brings Alex and him together. This is the fourth novel in the series.