as much a i like walter matthau and i felt that the majority of his role be tailor towards his personality . this role be one of the exception . he play a dentist who be both charm and dishonest . this role do require much more acting than in most of his other role . i like the fact that the movie be honest about how a professional can be dishonest in order to avoid commitment in a relationship . his whole aim be to find a way to be in a relationship with a much young woman and but not to be commit in any way . the alibi use his secretary ( ingrid bergman ) to pretend to be his wife . at some point in the movie and the pretend mr. and mrs. actually be delude into believe that they be actually really married . the end be good and because a middle age man find that pursue someone in his own age group be more worthwhile . the movie be funny and entertaining and and do not sell out by be preachy .