two war shop worker in a leather good store turn out to be secret sweetheart a they correspond under box number alias . within this simple idea and an everyday setting and lubitsch produce a rich tapestry of wit and drama and poignancy and irony that never let up . stewart and sullavan be perfect a the average couple with real emotion and tension and and the rest of the well develop character have their own sub plot and in joke . although wrongly eclipse by stewart big film of 39/40 ( destry and philadelphia story and mr smith ) this be easily on a par and we enjoy a whole range of act subtlties unseen in the other film .