This is a truly bizarro episode. I wasn't thrilled with how weird it got, but Martin's profession of his love for Louisa and his FINALLY acknowledging how horrible his parents were at raising him save the day--making this a truly memorable episode.
Eleanor is recovering from an impromptu operation from Martin! During this convalescence, Mrs. Tishell's husband returns home from the oil rig at the same time Mrs. Tishell is truly going off the deep end. Throughout all the show, the viewer knows that she loves Martin--but here the severity of this and its delusional nature become obvious. The Doc finds she's built a little shrine to him...and she kidnaps Martin's son in order to force Martin to meet her for a tryst!! This is all super-wacky but works wonderfully when Martin finally proves himself human and talks about his love for Louisa and agrees that his draconian ideas about child-raising are stupid.
All in all, for fans of the series, this is a must-see. Very sweet and worth your time.