As the curtain rises on Primary Stages’s production of “Peerless,” a college acceptance letter drops from the ceiling, landing in the center of the stage with a smack, like divine intervention — or a bomb — setting the play into motion. 

Playwright Jiehae Park was in residence at the MacDowell Colony when inspiration struck while on a tight deadline for another project. “Late one night, I thought about ‘Macbeth,’” she said in conversation with dramaturg Amy Boratko. “Whenever I read or see that play, I always get bored after Lady Macbeth leaves. What compels me the most about Shakespeare’s play is the relationship between Lady Macbeth and Macbeth. So, I thought, what if Macbeth and Lady Macbeth were two Asian-American twin girls?”