Crossword Genius

Late caller gets double (4,6)

Ross

I believe the answer is:

dead ringer

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'double' is the definition.
(I've seen this before)

'late caller' is the wordplay.
'late' becomes 'dead' (similar in meaning).
'caller' becomes 'ringer' (I can't explain this - if you can you should give a lot more credence to this answer).
'dead'+'ringer'='DEAD RINGER'

'gets' is the link.

Can you help me to learn more?

(Other definitions for dead ringer that I've seen before include "Lookalike" , "Likeness" , "Someone who looks identical to another (slang)" , "double" , "One can do no more changes!" .)

I've seen this clue in The Telegraph.
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