Celtic Empire by Clive CusslerDirk Cussler

THE LATEST NO. 1 BESTSELLER IN THE ACTIONPACKED DIRK PITT SERIES FROM MASTER OF ADVENTURE CLIVE CUSSLER A deadly collision puts Dirk Pitt on the trail of an ancient mystery stretching back thousands of years . . . When a rogue cargo freighter strikes an oil tanker in the Detroit River the oil spill is the worst marine disaster in years. Dirk Pitts NUMA team lead the cleanup operation with the help of new green tech firm BioRem. But when one of NUMAs best divers dies suspiciously while working Paperback softback