@Chase, it's a terrible movie, but was for a time a cult classic and referenced occasionally during the Feminist movement in the 70s, mostly by my mother.))
"A female private detective, Harriet Zapper, is hired by a rich old man to find his missing children, and becomes involved in counterfeiting and murder"
The review: "Imagine TV's The Avengers yoked to a British sex movie, add some conscious efforts to imitate Hong Kong kung-fu movies, and you have some idea of this lamentable enterprise. Totally raddled effort devoid of any finer judgment or humour."
Actually, the only thing that wasn't stolen at the Louvre's Apollo Gallery is the Regent Diamond, figure no one would take it because something to do with a curse.
I've also found that the two thieves were leaving for Algeria, thanks of a trace of DNA evidence recovered from a helmet and their past in burglary cases according to the police.