Peel and devein shrimp.
Remove the side muscle of the scallops. Slice across.
Heat butter in pan. Cook scallops until just done about 2 minute per side. Remove to dish. Set aside.
Add shallot just until soft, then add wine and parsley and simmer until alcohol is cooked off.
Slice mushrooms and sautè quickly in large sautè pan in 1 tablespoon butter. Season with salt and pepper. Add scallops, and uncooked shrimp. Shrimp will only take a few minutes to cook.
Add in heavy cream and continue to cook. Add parsley.