Once the information about Jon and Karyn was safely stored in the device's memory, Karyn suggested finding Sarah. To tell the truth, neither Jon nor Karyn had any idea where to find Sarah. But they still did have the magic stone. After a quick wish, they discovered that Sarah would be at the mall in Macy's in the handbags department in a half hour from the present moment, which was enough to go down there and lie in waiting.
Karyn hid behind a mirrored column with the device set to SCAN. She waited until the time the stone had specified, and walked out at exactly the right moment to point the device at Sarah's back.
The device now showed a long list of personality traits. Karyn skipped over them so that she could get to the usual questions at the bottom: ERASE, CLONE, and RETURN TO SCAN MODE. But there wasn't a lot of time--Sarah could at any moment walk away, meet a friend who was looking in Karyn's direction, or do something else that would make it hard to follow her without being noticed. So whatever Karyn was going to do, she had to do it right now. She decided to....