I usually don't join perpetual challenges...but I have started reading the Prey series and absolutely love Lucas Davenport. What better way to keep me motivated than joining the Perpetual Prey Challenge hosted over at Book Dragon's Lair.
John Sandford's newest Prey book "Wicked Prey" is being release in May of 2009.
Here is a list of the Prey books in order:
Rules of Prey (read 7/8/08)
Shadow Prey (read 2/5/10)
Eyes of Prey
Wicked Prey (May '09)
Storm Prey (May '10)