Crossword Genius

TV detective revealing number of fingers? (5)

Ross

I believe the answer is:

frost

This could be a double definition.

'tv detective' is the first definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'number of fingers?' is the second definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'revealing' acts as a link.

(Other definitions for frost that I've seen before include "Frozen deposit" , "Robert ---, US poet" , "RD Wingfield's detective" , "Ice crystals forming a white deposit" , "Frozen dew" .)

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