D4 'sergeant banner'

For no apparent reason there is a double episode of D4, called 'Sergeant Banner', slap-bang in the middle of the late 1973 ones on volume 9. That kind of explains why it seems six months in advance of the others.  It weaves an extended tale of the capture of four payroll robbers in with Frank Banner's relationship with the sensitive Jenny (played by Diane Craig) who we've seen a bit of in previous eps. The interesting parts in my opinion is where we get some information about Banner's background. Seems he and Jenny grew up in the same country town - a comfortable drive from Melbourne - and her father was a policeman and a mentor to Banner in some respect. 

This is a slightly odd sequence where Jenny asks Frank if this was his mother's house. She didn't know?! Anyway...