He Left Me to Drown, So I Took His Empire

The story

After seven years of building her husband's empire from nothing, Vivian catches him cheating with her cousin-secretary on their anniversary cruise. He signs a "temporary" divorce, publicly proposes to the mistress, then lets Vivian be locked in a flooding room and blamed for the disaster. But the wife he left to drown is the hidden Moore heiress, and she survives with evidence, power, and every reason to take back the empire he thought was his.