Meg Wolitzer presents three stories about quests and travel, which pose the question “How far do we need to go to find what we want, whether that something be an ephemeral pleasure, a lasting relationship, or a symbolic object?” In Margaret Atwood’s playful origin story “The Martians Claim Canada,” extraterrestrials invade—in search of a good musical. Jane Kaczmarek reads. In Lesley Nneka Arimah’s powerful “Options,” performed by Zainab Jah, a discarded daughter seeks love. And in the third, “Chivalry,” master fantasist Neil Gaiman finds the Holy Grail—in the most unlikely hands. Christina Pickles reads.