* The Mildenhall Treasure (2007)
* The Tower (2010)
* The Dying Breath (2014)
* The Strangers We Know (2016)
* The Vanished (2020)
* The Dead Land (2023)
Non-Fiction Books:
* Once and Future Great Lakes Country: An Ecological History (1998, co-authored with William E. Bluhm)
* Great Lakes: An Environmental History (2004)
* Nature's Metropolis: Chicago and the Great West (2008)
Children's Books:
* The Great Lakes Conspiracy: A Mystery Adventure (2011)
* The Great Lakes Treasure Hunt: A Mystery Adventure (2013)
* The Great Lakes Shipwreck Mystery: A Mystery Adventure (2015)