«Priceless» by Mariah Stewart

The award-winning New York Times bestselling author whose tender and sensual love stories touch readers' hearts weaves her signature magic, unfolding an unforgettable tale of a man and a woman who find that love is the most precious treasure of all…

When underwater archaeologist Sam McGowan is asked to help salvage a sunken Confederate blockade runner, he's eager for the opportunity to investigate his own family history—especially since the project is being handled by Gordon Chandler, a notable authority in underwater salvaging. When he finds Gordon's daughter Rachel in charge, Sam is not pleased. She can't possibly be her father's match. But not only has Sam wildly underestimated Rachel's professional abilities, he has yet to discover the many other facets of this complex woman.

All her life, Rachel Chandler has dreamed of finding sunken treasure. While grateful to run her first solo operation, she resents having been assigned to run the salvage operation of a sunken blockade runner while her father is investigating a pirate ship. Most definitely, she does not want to work with a man who will question her every move. But when she and Sam stumble onto an unexpected cache of gems aboard the sunken wreck, they're drawn into something that fast becomes far more than just a working partnership. As Rachel and Sam start to dream of a future together, they also begin to realize that the fabulous treasure they have discovered holds more danger than they ever suspected.