Jessica took the contract home and read it over. It seemed to match what had been promised to her.
In the morning, she chatted with her roommate, Kaylee. Jessica was deliberately vague about the role she'd been offered, only that it was a commitment of several months that could really further her career but also be life-altering. Kaylee encouraged Jessica to follow her dreams, even if there were risks involved. Jessica signed and mailed the contract that afternoon.
A few weeks later, Jessica moved into the director's house. The "guest room" turned out to be more of "mother-in-law suite" off to one side of the house. It had a spacious bedroom, large waterbed, big screen TV, spacious bathroom with a large tub, and doors that directly opened to the pool deck and outside. Other than mealtime, someone could hide away out of sight by the people in the rest of the house. Tommy, the young man she'd been hired for, was on an extend post-graduation, traveling in Europe and visiting relatives to ensure he wouldn't see Jessica until she was a full mermaid.
Jessica received several injections from a man in a lab coat and was told the transformation would take some time. Jessica started going for extend swims twice a day, and working on her tan. Jessica started out in a bikini and, other than an increasing appetite, nothing seemed different for the first couple days. Then Jessica started to notice that sitting was becoming uncomfortable and her bikini top was starting to get tighter. By the end of the first week, she could tell a tail was growing from her backside - an extension of her tailbone. Her breasts had increased from A's to B's. She stopped bothering with the bikini and took to swimming and tanning nude.
By the end of the second week, Jessica had a tail trailing behind her and found walking difficult. Her breasts were up to C's, and very firm. She had a specially made wheelchair to get between the pool and her room (and the bathroom) as needed, but she was spending more and more time in the saltwater pool. Her legs soon began to draw into her tail. By the end of the third week they were a single appendage with two flukes. As her tail approached its finally form, Jessica woke up one morning to find a second hole below her vagina; her anus had shifted to the front.
Jessica lay sunning on a chair by the pool. Her changes seemed to have finished. Her tail reminded her of a dolphin. There were no scales, which she supposed was too much for science. She wasn't actually half-fish, after all. The director approached. He was wearing shades, but she had the sense he was leering at her. Was she ready? Jessica thought so, though she needed a top that fit her improved bust. It wasn't modesty; she figured as shy as Tommy was it would be better if he didn't see her breasts immediately.
Tommy came home a few days later. Jessica stayed in her room that evening, but the next morning she intended to go for a morning swim where she would finally meet Tommy.