Crossword Genius

Suddenly believe you will get out of the tunnel? (3,3,5)

Ross

I believe the answer is:

see the light

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

'suddenly believe you will get out' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'the tunnel?' is the wordplay.
I cannot really see how this works, but
an anagram of 'the' is 'eth' which is located in the answer.
This explanation may well be incorrect...

'of' is the link.

Can you help me to learn more?

(Other definitions for see the light that I've seen before include "Come to understand" , "Become converted" , "Gain sudden understanding" , "Realise a fact or mistake - be religiously converted" , "Realise one's mistake" .)

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