Daisy Johnson, 24, snapped her bone during an intense arm wrestling match with a stranger who challenged her. “My arm felt like the floppy arm in Harry Potter!” she told Caters News Agency.

SISTERS By Daisy Johnson 224 pp. Riverhead Books. $26. A version of this article appears in print on , Page 10 of the Sunday Book Review with the headline: Arrested Development.

When Dr. Andrew Garner tries to psychoanalyze Daisy Johnson, she reveals why she's so determined to form a team of Inhumans within SHIELD in this exclusive sneak peek.

Jane Cooper Johnson, formerly known as Daisy Jane Cooper, reflected on the symbolic metal plates at the base of the sculpture, representing the steps she took on that historic day.