Twice, Laura (Mary Tyler Moore) has arranged a vacation for Rob (Dick Van Dyke) and herself at a lakeside resort -- and both times, the vacation has had to be canceled because Rob has come down with a backache. A tearful Laura concludes that Rob's pains are psychosomatic, and that he simply doesn't want to spend any time alone with her. To put Laura's mind (and his own) to rest, Rob pays an uproarious visit to psychiatrist Phil Nevins (Robert Elliott). Ken Berry makes the first of two appearances as Tony Daniels, "The Alan Brady Show"'s choreographer. ~ Hal Erickson, Rovi