Madame Cobilet is out and about again! Margaret needs a vacation and decides to join Det. Thrower at his new home on the lake. Protected from the media, she finds more mysteries inside the house. Why does she want Sandy to buy marbles and what in the world is in the bag Detective Thrower finds in the lake? And then , there is the young son in an institution, waiting for his eighteenth birthday. Margaret spoils his own birthday surprise, ten years early. Come on in. Go with Margaret and learn how to fish, relax and enjoy marshmallows over an open fire! While you're there, listen to the voices.