Is this the video you are after?
Call no.: RC464.G5.S45
Title: Silent twins
Edition: producer, Martin Thompson, director, Jon Amiel.
Pub Info: 1 videocassette (VHS) (90 min.) : sd., col. ; 1/2 in.
Note 1: BBC production, c1985. Copied from ABC television
broadcast 27-11-90 - copyright reference no. M007649T.
Based on the book by Marjorie Wallace.
Summary: Summary: A story based on fact about twin
sisters, June and Jennifer, who enter into a pact to
reject spoken contact with the adult world. Eventually
they turn crime.
There was a follow-up documentary broadcast last year in Australia
showing what had happen after they had been convicted of arson. One of
the twins had died and the surviving twin has begun to talk, although she
is very difficult to understand.
If this is the video you are after you would need to contact the US
distributor of BBC material.
Media Services Department
Sydney phone: 02 850-7557
NSW 2109 fax: 02 850-7568
Australia email: firstname.lastname@example.org