Case 2 - Red Lense Glasses Location Clue
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Take a look at something on the desk with the glasses on.
"I never get up before 6am" clue refers to a location to rule out on the map, check the descriptions of the venues.
The Radium Club – I never get up before 6am and the Radium runs its big breakfast dance 4 – 5am so you can rule out the Radium Club