Billy treats a family with damaged livers via poisonous mushrooms. The father, the only unaffected family member, must choose which of his two sons will receive part of his liver. Aaron sees a troubled patient who, through hypnotherapy, claims she was sexually abused by her father. Phillip forces Kate to attend a touchy-feely medical conference with Cacaci. Billy gets he and Diane thrown out of Lamaze class. Diane debates whether to tell Billy what really happened at Jack's cabin.