Murder à la carte: Burritos & Bandidos

From the box: Buenos Dias, Amigos. It's Fiesta time in Adios, Mexico and everyone is celebrating. The Hasta La Vita cantina is serving hot and spicy burritos but someone else is cooking up trouble for Senora Margarita, a beautiful widow with pesos to burn. This unlucky lady is fatally stabbed in the back with a small dagger and you may be a suspect.