Rough seas

Hot Money -- The Save the Environment gala has Molly DeWitt and dashing detective Michael O'Hara swimming with society sharks when Molly hooks the most endangered species of all: the late chairwoman of the affair. Tessa was no saint, and the rich shed crocodile tears for the departed philanthropist. Now the question Molly needs to answer isn't who wanted Tessa dead, but who killed her -- and why. Hot Schemes -- When Michael O'Hara's favorite uncle's boat floats into the Miami docks wired to explode, Molly DeWitt is horrified when Michael leaps aboard and speeds away from the gawking crowd.…