Chocolate Icebox Pie

2 cups vanilla wafer crumbs
1 cup finely chopped nuts
1/2 cup melted butter
4 ounces German's sweet chocolate
3 tablespoons water
1 cup heavy cream
1/4 cup confectioners' sugar, sifted
1 teaspoon vanilla

Mix vanilla wafer crumbs, chopped nuts, and melted butter. Press half of the crumb mixture into the bottom of a buttered glass pie plate. Chill crust thoroughly. Melt chocolate with water in a double boiler or in saucepan over low heat. Stir until a smooth paste. Cool. Whip cream; fold in the cooled chocolate mixture and the confectioners' sugar. Add vanilla and pour over chilled crumbs. Top with remaining crumbs. Chill thoroughly before serving.