Plot summary
After finding Sarah's Latnok ring in Cassidy's vault, Kyle and Jessi must deal with the implications. Determined to find out what happened to her mother, Jessi will stop at nothing to learn the truth. But when she starts to experience serious side effects, Kyle worries that the truth may do Jessi more harm than good. The pair investigate and are shocked to discover that Sarah had not abandoned Jessi and was actually murdered by Cassidy. Meanwhile, Declan forces Lori and Hillary to finally bury the hatchet, while Josh struggles to deal with Andy's impending departure.
Credits
Adapted from Wikipedia contributors, List of Kyle XY episodes. HTML formatting and reference markers removed.