Geologist, Bob Boyd, who works in British Columbia timber country, has no memory of his past following a terrible accident, which only he survived. Hired by the powerful Matterson Corporation to survey land before they build a great new dam, he begins to uncover the shaky foundations of the Matterson family and becomes a fly in their ointment. Matters are complicated when he falls in love with Claire Trinavant, the last link to a forgotten family whose name strikes a mysteriously resonant chord.

The cover of this copy is shown here. It's an earlier edition than the one shown on the bookshelf (I think).