There's an app for everything. In Kat Tang's debut novel Five-Star Stranger, there's even one that allows you to hire someone you've never met to play a role in your life, like to be best man at a wedding or pretend to be the father of a child. In today's episode, Tang speaks with NPR's Scott Simon about the titular stranger at the heart of her story, who is going around New York taking on a number of roles, and how he starts to crack as he reexamines his relationship to a woman who's hired him to pretend to be her husband – and to the girl who believes she's his daughter.

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