Bake the Crust: Begin by baking the frozen deep-dish pie shell according to the package directions until it's golden brown.

Melt the Chocolate: In a small saucepan, combine the chopped unsweetened chocolate with sweetened condensed milk. Heat over medium-low, stirring constantly until melted.

Add Almond Flavor: Stir in almond extract into the melted chocolate mixture.

Pour and Set: Pour the chocolate mixture into the baked pie shell, ensuring an even layer.

Prepare Cherries: Set aside 8 maraschino cherries for garnish and chop the remaining ones.

Beat the Cream Cheese: In a large bowl, beat softened cream cheese until smooth and fluffy.

Mix in Condensed Milk: Add remaining sweetened condensed milk and continue beating.

Incorporate Pudding Mix: Gradually beat in cold water and instant vanilla pudding mix.

Fold in Cream and Cherries: Gently fold in whipped cream and chopped cherries.

Transfer to Crust: Transfer the mousse mixture into the chocolate-covered pie crust.

Chill: Refrigerate the pie for at least 4 hours to set properly.

Garnish and Serve: Before serving, garnish with whole cherries and grated chocolate.