The excellent Monsieur Dutilleul has always been able to pass through walls but has never seen the point of his gift given the general availability of doors. One day however his tyrannical boss drives him to desperate creative measures; he develops a taste for intra-mural travel & becomes something of a show-off. How will the unassuming clerk adjust to a glamorous life of crime? Aymes genius lies in the practical unfolding of bizarre & difficult situations. In each story comedy is balanced by a serious streak & then unbalanced once more.. .