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Story number two, Martha's Kitchen, is quite heavy on dialogue, which may not be to everyone's taste. However, the backstory and the two main characters, Martha and Jillian, are developed to a more satisfyingly level. The plot twist, when it arrives, is pleasingly sudden. The final scene, in my humble opinion, would have more impact if it were considerably shorter, but that doesn't really detract from the overall tale.
Story number three, Cactus Valley, as I mentioned earlier, is my favourite. Ernesto creates two interesting, though not entirely likeable, main characters and engenders a good sense of isolation and peril around them. There is an almost comedic element to this tale, based on a clash of ideologies, which is the most satisfying of the three 'bizarre' twists.
Overall, three very readable short stories that I'd certainly encourage people to have a look at.