Crossword Genius

Where everyone was rightly under suspicion, hellish working for a Chinese newspaper? (6,2,3,6,7)

Ross

I believe the answer is:

murder on the orient express

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

'where everyone' is the definition.
The definition suggests a singular noun which matches the answer.

'was rightly under suspicion hellish working for a chinese newspaper?' is the wordplay.
I cannot really see how this works, but
'was' could be 'ex' (I've seen this in other clues) and 'ex' is located in the answer.
'working' could be 'on' (e.g. a machine is working or on) and 'on' is located in the answer.
'newspaper?' could be 'press' (newspaper is a kind of press) and 'press' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Guardian.
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