The Dirk Cobb Thrillers, each just 99 cents.
Crack
Up, A Dirk Cobb Thriller (Book One)
http://itunes.apple.com/us/book/crack-up-dirk-cobb-thriller/id518568958?mt=11&ign-mpt=uo%3D4
The Journey, A Dirk Cobb Thriller (Book Two)
https://itunes.apple.com/us/book/journey-dirk-cobb-thriller/id528152055?mt=11&ign-mpt=uo%3D4
The
Reckoning, A Dirk Cobb Thriller (Book Three)
https://itunes.apple.com/us/book/reckoning-dirk-cobb-thriller/id528912854?mt=11&ign-mpt=uo%3D4
https://itunes.apple.com/us/book/reckoning-dirk-cobb-thriller/id528912854?mt=11&ign-mpt=uo%3D4
Abduction,
A Dirk Cobb Thriller (Book Four)