Based on

Movies like Long Legs, Long Fingers (1966)

Baron Holberg, who looks back with pride on a long family tradition as hotel thieves, is horrified when his daughter Doris falls in love with the lawyer Robert Hammond, of all people, rather than choosing the art thief Sammy, as he would wish. Under the pretext that they are being pursued by the police, he lures his daughter away from the lawyer, but when he confesses the deception to her, Doris immediately sets off for Hammond's country estate near London. However, Hammond's father is not too fond of the connection either...