Should the Forensic Scientist check all players' cards before placing a clue, or only the Murderer's?

Question

Accepted Answer

In practice, all of them. Scanning the whole table keeps a clue from drawing attention to an innocent player's similar card. The Murderer's cards only need a look at the start. The rulebook does not spell this out.

Deception: Murder in Hong Kong

Should the Forensic Scientist check all players' cards before placing a clue, or only the Murderer's?