Much ado about nauticaling
(Book)

"Piloting a glass bottom tourist boat, Whitney Dagner spots the dead body of a wealthy man who swindled her brother Nick out of a lot of money and, with Nick as the prime suspect, must clear his name, while dealing with an ex-boyfriend looking to rekindle their relationship"--

Whitney Dagner drops out of the Los Angeles corporate world to come home to Santa Catalina Island. She's going to help her brother Nick run Nautically Yours, the family tourism business. Between gift shop shifts, she pilots the Sea Bounder, a glass bottom boat showing tourists the underwater sights of aquatic plants, marine life-- and a murder victim? Jules Tisdale was a wealthy man with business interests throughout Catalina who was about to be honored as Person of the Year. Then someone strangled him with his own tie and tossed his body into the water. That someone appears to be Nick, who had a raw deal from Jules and no alibi the night of his murder. To clear her brother's name, Whit will have to investigate Jules' shady associates and not exactly grief-stricken family members. -- adapted from back cover