Melonie Byars is found murdered in the flower shop where she worked. Unfortunately for authorities, there are no witnesses and no clues. The murderer did, though, leave a calling card: a carefully arranged bouquet of flowers. Seattle's best homicide detective, Sgt. Arthur Washington, is called to duty.
Washington prides himself on his case closure rate, but this is one case he can't crack. He is completely baffled, and the murder of Ms. Byars remains unsolved. A year and a half later, another murder occurs in the same grizzly manner. Washington is back on the case, but even the top brass of the Seattle Police Department are stumped.
Detective Washington will not let this killer get away twice. He's determined to put a stop to the mysterious flower murders. Bodies start to pile up with the same common link. It's not long before the city is in a panic. Paired with a new partner, Washington must catch a killer who's made Seattle his personal bloody playground.