Warren grew up in the Hudson River Valley of New York State. Upon obtaining his teaching degree from the University at Albany, he moved to Colorado, and settled in Denver where he can often be found typing away at one of the local coffee shops.Warren is known for his gritty, futuristic KOP series. KOP was released 2007 to be followed by Ex-KOP in 2008. The third book in the series, KOP Killer, won the 2012 Colorado Book Award for Best Mystery.Warren's latest, Tides of Maritinia, is coming soon from HarperCollins. Always eager to see new places, Warren has traveled extensively. Whether it's wildlife viewing in exotic locales like Botswana and the Galapagos Islands, or trekking in the Himalayas, he's always up for a new adventure.