"Catch That Collierville Zebra"

Ingredients

• 1 1/2 c. chocolate wafer crumbs (about 30 wafers)
• 3 Tbsp. margarine or butter, melted
• 1/2 (6 oz.) pkg. semi-sweet chocolate pieces (1/2 c.)
• 4 (8 oz.) pkg. cream cheese, softened
• 1 1/4 c. sugar
• 3 Tbsp. cornstarch
• 1/4 tsp. salt
• 5 large eggs
• 1 (8 oz.) container sour cream
• 2 tsp. vanilla extract
• 1 1/2 c. heavy or whipping cream
• 1 1/2 (8 oz.) pkg. semi-sweet chocolate squares
• 8 oz. white chocolate