Blue Murder at St Trinian’s DVD (2007) Joyce Grenfell, Launder (DIR) cert U Title: Blue Murder at St Trinian’s Leading Actor: Joyce Grenfell Duration: 83 mins Format: DVD / Normal Type: DVD Studio / Publisher: Elevation Sales UK Release Date: 01 Jan 2007 Edition: Normal The anarchic St Trinian’s schoolgirls win a UNESCO prize trip to Rome, in the second St Trinian’s film. Upon arrival they become involved with a jewel thief (Lionel Jeffries) who hides out with the school, disguised as the headmistress.