Abby prepares to travel to Croatia to join Luka, but has deep reservations about confessing to him about her brief affair, which she confides to her AA sponsor. Meanwhile a brash new doctor butts heads with Greg when it seems he isn't interested in teaching his med students anything; and a young woman who recently had a heart transplant is admitted and discovers her body is rejecting her new organ. In addition, Archie needs a willing subject for his taser experiment but can't seem to buy the cooperation of anyone.
—Ron Kerrigan <mvg@whidbey.com>