In episode 3 of Emergence, Piper develops a mysterious illness which forces Jo to deepen her investigation into the mystery surrounding her foster daughter. She’s led to a tech corporation, Auger Industries, and its head, Richard Kindred, played by Lost’s Terry O’Quinn. Ed also has a follow up appointment with the oncologist, while Alex tries to sort out the airband radio frequency.
The episode begins in the early morning, with Jo listening to clicks and beeps on her computer that she tells Alex are sounds she recorded from the pirate airband radio frequency. He offers to use some pattern recognition software to help her figure out what the sounds mean.
They move on to discussing how long he’s going to stay at the house. He’s still worried that the family is in danger, but Jo is worried that Mia will get confused and start to think her parents are getting back together. When Mia comes downstairs and remarks on how nice it is that they’re all together, Alex sees Jo’s point and says he’ll leave today.
Jo goes upstairs to wake up Piper, who’s supposed to go to work with her, since Ed has an oncologist appointment. Just before she wakes up, Piper has a nightmare that the bedroom door knob disintegrates and she’s trapped in the room. Jo discovers that Piper has a fever and leaves to get the thermometer.