Crossword Genius

Actor seen in Split twice? (3,4)

Ross

I believe the answer is:

rip torn

I'm a little stuck... Click here to teach me more about this clue!

'actor seen' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'split twice?' is the wordplay.
I cannot quite understand how this works, but
'split' could be 'rip' (synonyms) and 'rip' is located in the answer.
The remaining letters 'torn' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'in' is the link.

Can you help me to learn more?

I've seen this clue in The Independent.
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