<p><strong>Two killers are prowling Manhattan. It&#39;s double duty for Erin and Rolf.</strong></p><p>A detective doesn&#39;t always have the luxury of giving all her attention to just one case. Erin O&#39;Reilly and her K-9 partner, Rolf, have just started to sink their teeth into their latest investigation&mdash;a pair of Scottish gangsters, tortured, executed, and washed up on the rocks&mdash;when another mystery intrudes. A beautiful young woman is found dead in a locked hotel room, posed with a bouquet of fresh roses. It looks like a carefully staged suicide, but Erin isn&#39;t so sure. Soon she&#39;s juggling two cases at once, dodging bullets in a budding mob war while trying to nail down a cunning serial killer&mdash;one who just might be stalking her in return.</p>