### Clue: Hoskins would start to examine answer to make clue (4)
### Answer: IDEA 
 ### Explanation: Definition: clue
 I'D(contraction of "I would"/Hoskins, the setter, would, using the self-referential pronoun) + **1st letter of**(start to) "examine" + A(abbrev. for "answer").
Defn: …, as in "I haven't got a clue".