Shakespeare's Prince Henry's journey by air in semi-darkness (4-5)
I believe the answer is:
half-light
'semi-darkness' is the definition.
(I've seen this before)
'shakespeare's prince henry's journey by air' is the wordplay.
I cannot quite understand how this works, but
'prince' could be 'hal' (Shakespearean nickname of Henry V when a prince) and 'hal' is found in the answer.
'journey' could be 'flight' (flight is a kind of journey) and 'flight' is located in the answer.
No letters remain.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Another definition for half-light that I've seen is " Poor visibility".)