Trivia: The beach house is supposedly in Cape Cod, but was actually filmed in Wrightsville Beach, NC on Figure Eight island.
Trivia: In one scene, Laura is standing on the beach in a short dress. It was really cold that day and Julia Roberts (Laura) was freezing, so the film crew dropped their pants for that shot so she wouldn't be uncomfortable alone.
Trivia: When Laura's husband hits her at the beginning and she falls on the floor, it's really Julia Roberts falling. It's her head actually banging on the floor. Fortunately, the filmming crew got it on the first take.
Chosen answer: No, the doctor was not in on her plan. She had her escape planned for a long time, but was waiting for the right time. The stormy weather on the boat provided the "perfect" time for her to put her plan into action.
Ral0618