Confused old German director's on set at last (7)
I believe the answer is:
tangled
'confused' is the definition.
(I've seen this before)
'old german director's on set at last' is the wordplay.
'old german' becomes 'angle' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'director' becomes 'd' (abbreviation eg in film reviews).
'on' means one lot of letters go next to another.
'at last' indicates one should take the final letters.
The last letter of 'set' is 't'.
'angle'+'d'='angled'
'angled' put after 't' is 'TANGLED'.
Can you help me to learn more?
(Other definitions for tangled that I've seen before include "Intertwined" , "Twisted into confused mass" , "Convoluted" , "D [Disney] made" , "In a knotty mess" .)