Julia Stiles, who grew up in SoHo and began acting at eleven, has morphed seamlessly from intense, guarded teen (“Ten Things I Hate About You,” “Save the Last Dance,” “O”) to intense, smart-sexy action star (the “Bourne” trilogy), with a foray into cold-bitch territory, via a thankless role in “Silver Linings Playbook,” as Jennifer Lawrence’s uptight sister. Stiles’s stage work has included Shakespeare (“Twelfth Night,” at the Delacorte in 2002) and Mamet (“Oleanna” on Broadway), and now she’s taking a break from her film and TV work (lately in the misguided Fox-sponsored Web series “Blue,” as a woman who resorts to prostitution to support her math-prodigy son) to star in Scott Organ’s “Phoenix,” at the Cherry Lane. In the one-act dark comedy, which premièred at the Humana Festival in 2010, Stiles and James Wirt play virtual strangers who reunite after a one-night stand, with very different expectations for the future of their relationship.