Plot summary
Kyle's apprehension about Amanda gets worse as she frequently suffers from headaches that hinder her preparation for a very important piano recital. Convinced that Latnok did something other than sedate her the night she was kidnapped after the prom, Kyle discovers that her discomfort is due to a neural device implanted by Latnok that should no longer be active after her abduction. Kyle enlists Jessi to help Amanda, but Jessi's constant presence with Kyle and her moving in with the Tragers only agitates Amanda more. As part of an experiment to help Amanda, Kyle kisses Jessi, but Amanda walks in on them. Though she breaks up with him on the spot, he manages to give Amanda one last kiss, which destroys the device.
Credits
Adapted from Wikipedia contributors, List of Kyle XY episodes. HTML formatting and reference markers removed.