Mix together the raspberries, sugar, tapioca, lemon juice, cinnamon and salt until raspberries are well covered.
Pour into 9 or 10-inch pastry shell. Dot with butter, top with crust.
Make slits in the top crust and brush with cream. Bake in a preheated 425 degrees F (220 degrees C) oven for 15 minutes, then at 375 degrees F (190 degrees C) for 25 minutes.